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imagettfbbox

(PHP 4, PHP 5)

imagettfbbox Получение параметров рамки обрамляющей текст написанный TrueType шрифтом

Описание

array imagettfbbox ( float $size , float $angle , string $fontfile , string $text )

Эта функция расчитывает и возвращает параметры рамки вокруг TrueType текста в пикселах.

Список параметров

size

Размер шрифта.

Замечание: В GD 1 измеряется в пикселах. В GD 2 измеряется в точках.

angle

Угол в градусах в котором будет измерен text.

fontfile

Имя файла TrueType шрифта (может быть URL). В зависимости от версии GD библиотеки функция может попытаться найти файл без '/' в начале путем добавления '.ttf' в конец имени файла. Поиск при этом будет производиться в директории, заданной в конфигурации библиотеки.

text

Измеряемая строка.

Возвращаемые значения

imagettfbbox() возвращает массив из 8 элементов представляющих координаты четырех точек - вершин рамки вокруг текста. В случае ошибки функция вернет FALSE.
ключ содержимое
0 нижний левый угол, X координата
1 нижний левый угол, Y координата
2 нижний правый угол, X координата
3 нижний правый угол, Y координата
4 верхний правый угол, X координата
5 верхний правый угол, Y координата
6 верхний левый угол, X координата
7 верхний левый угол, Y координата

Точки расчитаны относительно текста text и независимо от угла angle. То есть "верхний левый" означает верхний левый угол, если смотреть на текст горизонтально.

Примеры

Пример #1 Пример использования imagettfbbox()

<?php
// создание изображения 300x150 
$im imagecreatetruecolor(300150);
$black imagecolorallocate($im000);
$white imagecolorallocate($im255255255);

// Белый фон
imagefilledrectangle($im00299299$white);

// Путь к файлу шрифта
$font './arial.ttf';

// создаем рамку для текста
$bbox imagettfbbox(1045$font'Powered by PHP ' phpversion());

// наши координаты X и Y
$x $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 25;
$y $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;

// Пишем текст
imagettftext($im1045$x$y$black$font'Powered by PHP ' phpversion());

// создаем другую рамку для другого текста
$bbox imagettfbbox(1045$font'and Zend Engine ' zend_version());

// задаем координаты так, чтобы текст шел сразу за первой надписью
$x $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) + 10;
$y $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;

// Пишем вторую надпись
imagettftext($im1045$x$y$black$font'and Zend Engine ' zend_version());

// Вывод в броузер
header('Content-Type: image/png');

imagepng($im);
imagedestroy($im);
?>

Примечания

Замечание:

Для работы функции необходимо наличие библиотек GD и » FreeType.

Смотрите также

  • imagettftext() - Рисование текста на изображении шрифтом TrueType

Коментарии

Finally managed to make a fixed version of imagettfbbox().
All angles returns correct values.
Except that imagettftext() returns different trackings (space between each character) when rotating.

<?php
   
// Set some test variables
   
$font "d://www//tahoma.ttf";
   
$text "Finally, I can center rotated text!";
   
$size 20;
   
$angle 20;

   
// Create an image and fill the background with lightgray
   
$image imagecreatetruecolor(500400);
   
imagefill($image00hexdec("dddddd"));

   
// Make a cross to make it easier to analyze
   
imageline($image00imagesx($image), imagesy($image), hexdec("000000"));
   
imageline($imageimagesx($image), 00imagesy($image), hexdec("000000"));

   
// Run a fixed version of imagettfbbox()
   
$bbox imagettfbbox_fixed($size$angle$font$text);

   
// Make some text and center the text on the image.
    // imagettftext() pivot is on lower left
   
imagettftext($image$size$angleimagesx($image) / $bbox['width'] / 2imagesy($image) / $bbox['height'] / 2hexdec("0000ff"), $font$text);

   
// Show the image
   
imagepng($image);

    function 
imagettfbbox_fixed($size$angle$font$text)
    {
       
// Get the boundingbox from imagettfbbox(), which is correct when angle is 0
       
$bbox imagettfbbox($size0$font$text);

       
// Rotate the boundingbox
       
$angle pi() * $angle pi() * 360;
        for (
$i=0$i<4$i++)
        {
           
$x $bbox[$i 2];
           
$y $bbox[$i 1];
           
$bbox[$i 2] = cos($angle) * $x sin($angle) * $y;
           
$bbox[$i 1] = sin($angle) * $x cos($angle) * $y;
        }

       
// Variables which tells the correct width and height
       
$bbox['width'] = $bbox[0] + $bbox[4];
       
$bbox['height'] = $bbox[1] - $bbox[5];

        return 
$bbox;
    }
?>
2004-02-08 16:26:16
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I took Magicaltux's word wrap procedure and modified it in two ways.  I changed the order of processing so that the string plotting function is called only once for each word instead of for every character.  And I wrote the results to a string scalar instead of a string array, with embedded breaks <br> at line ends.  It should run pretty fast.  Mine breaks only on spaces, but hyphens could easily be added.

I'm new to PHP so I apologize for my idiosyncratic formatting conventions.
<?
function myWordWrap($txt,$font,$size,$width
{
   
/*
        word-wrapper.  gets bounding box sizes for each word in a string, then
        strings words together up to desired width. calls strpos and
        imagettfbbox only once per word - so very fast.
        this version reconcatenates the words with a <br> character where
        the line break should be.
    */
   
$txt.=" "// guaranteed to find end of line
   
$spaces=array();
   
$wids=array();
   
$i=0;
    while(
true)
    {
       
$j=strpos(substr($txt,$i)," ");
        if(!(
$j===false))
        {
           
$spaces[]=$j+$i;
           
$bbox=imagettfbbox($size,0,$font,substr($txt,$i,$j+1));
           
$left=($bbox[0]>$bbox[6])?$bbox[6]:$bbox[0]; 
           
$right=($bbox[2]>$bbox[4])?$bbox[2]:$bbox[4]; 
           
$wids[]=$right-$left
           
$i=$j+$i+1;
        }
        else     break;
    }
   
$lastspace=-1;
   
$cum=0;
   
$t2="";
    for(
$i=0;$i<count($spaces);$i++)
    {
        if(((
$cum>0)&&($cum+$wids[$i])>$width)) // time for a line break
       
{
           
$t2.="<br>";
           
$cum=0;
           
$i--;
        }
        else 
        {
           
// we'll always get at least one word (even if too wide) thanks to 
            // ($cum>0) test above
           
$t2.=substr($txt,$lastspace+1,$spaces[$i]-$lastspace);
           
$cum+=$wids[$i];
           
$lastspace=$spaces[$i];
        }
    }
    return 
$t2;
}
?>
2004-03-09 16:12:04
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Here is a function which moves the center of text's bounding 
box to a given pivot point (px,py) and rotates text about
that point.
<?php
$width
=500;
$height=400;
$fontpath 'c:/windows/fonts/arial.ttf';
$text 'Finally, I have a roated text box';
$fontsize 20;
$angle 30.0;
// create an image and fill the background with lightgray
$image imagecreatetruecolor($width,$height);
imagefill($image000xDDDDDD);
// bounding box
$bbox imagettfbbox($fontsize0$fontpath$text);
// baseline point for drawing non-rotated text.
$x0$bbox[6];
$y0=-$bbox[7];
// fixes bounding box w.r.t. image coordinate.
$bbox[5]=-$bbox[5]+$bbox[1];
$bbox[7]=-$bbox[7]+$bbox[3];
$bbox[1]=0;
$bbox[3]=0;
// get the size of image.
$sx=imagesx($image);
$sy=imagesy($image);
// center of bounding box (xc,yc);
$xc=($bbox[0]+$bbox[2])/2.0;
$yc=($bbox[1]+$bbox[7])/2.0;
// rotation angle in radian
$rad=$angle*pi()/180.0;
$sa=sin($rad);
$ca=cos($rad);
$x1=$x0-$xc;
$y1=$y0-$yc;
//pivot point(here, we take the center of image)
$px=$sx/2.0;
$py=$sy/2.0;
// new baseline point for rotated text.
$x2intval$x1*$ca+$y1*$sa+$px+0.5);
$y2intval(-$x1*$sa+$y1*$ca+$py+0.5);

imagettftext($image,$fontsize,$angle,$x2,$y2,0xFF,$fontpath,$text);
// draw rotated bounding box;
rotbbox($bbox,$angle,$px,$py);   
for(
$i=0;$i<4;$i++){
   
$x0=$bbox[2*$i+0];
   
$y0=$bbox[2*$i+1];
   
$j=$i+1
   if(
$j==4$j=0;
   
$x1=$bbox[2*$j+0];
   
$y1=$bbox[2*$j+1];
   
imageline($image,$x0,$y0,$x1,$y1,0xFF0000);
}
// Show the image
imagepng($image);

function 
rotbbox(&$bbox,$angle,$px,$py){
     
$xc=($bbox[0]+$bbox[2])/2.0;
     
$yc=($bbox[1]+$bbox[7])/2.0;
     
$rad=$angle*pi()/180.0;
     
$sa=sin($rad);
     
$ca=cos($rad);
     for (
$i=0;$i<4;$i++){
         
$x=$bbox[$i*2+0]-$xc;
         
$y=$bbox[$i*2+1]-$yc;
         
$bbox[$i*2+0]= intval$ca*$x+$sa*$y+$px+0.5);
         
$bbox[$i*2+1]= intval(-$sa*$x+$ca*$y+$py+0.5);
     }
}
?>
2004-06-24 09:55:49
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I have tryed all of fixes
The David Eder's fix is the only working fix.
The "jtopland at hive dot no"s fix is good enough, but it not working with angle = 180 degrees.
2005-03-15 18:00:31
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Here is a function that lets you write a string with your own "font tracking" level (the amount of pixels separating each character).  It uses imagettfbbox to determine the width of each character, so it doesn't discriminate against the skinnier of characters.  For this example, let $t = the amount of distance in pixels you want to separate each character from its neighbors.

<?php
function ImageTTFTextWithTracking($im$size$angle$t$x$y$color$font$text) {
   
$numchar strlen($text);
    for(
$i 0$i $numchar$i++) {
       
# Assign character
       
$char[$i] = substr($text$i1);

       
# Write character
       
imagettftext($im$size$angle, ($x $w + ($i $t)), $y$color$font$char[$i]);
       
       
# Get width of character
       
$width imagettfbbox($size$angle$font$char[$i]);
       
$w $w $width[2];
    }
}
?>

Be aware that it currently does not work for angles other than the 0 default (I have no need for that).
2005-03-28 22:46:40
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Pretty trivial, but still might save someone some trouble: on my system (Debian Linux), the absolute path to the font file had to be specified. I tried it relative to the current webpage and that did not work.
2005-04-30 22:37:44
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
according function by jtopland at hive dot no
08-Feb-2004 03:26

soukhinov at mail dot ru was right, the function doesn't work with 180. By the way it was a intresting way to trasform the angle to radian. Change the calculation of the angle to the following:  $angle = $angle/ 180 * pi();
The function to calc. the points is correct. Sorry to say this, but the cal. of the height and width is incorrect. I used the version from LB (11-Feb-2004 08:55)

    /**
     * return width and height, offset [left, top] of a ttf character
     * @param string $font : the font file
     * @param string $text : the character
     * @param int $size : the font size
     * @param int $angle : the angle
     * @access private
     * @return array  of the width and height, left and top.
     **/
    function _getCharacterSize($font, $text, $size, $angle)
    {
         // Get the boundingbox from imagettfbbox(), which is correct when angle is 0
         $bbox = imagettfbbox($size, 0, $font, $text);

         // Rotate the boundingbox
         $angle = $angle/ 180 * pi();
         for ($i=0; $i<4; $i++)
         {
                 $x = $bbox[$i * 2];
                 $y = $bbox[$i * 2 + 1];
                 $bbox[$i * 2] = cos($angle) * $x - sin($angle) * $y;  // X
                 $bbox[$i * 2 + 1] = sin($angle) * $x + cos($angle) * $y; // Y
         }
         // Variables which tells the correct width and height
        $bbox["left"] = 0- min($bbox[0],$bbox[2],$bbox[4],$bbox[6]);
        $bbox["top"] = 0- min($bbox[1],$bbox[3],$bbox[5],$bbox[7]);
        $bbox["width"] = max($bbox[0],$bbox[2],$bbox[4],$bbox[6]) -  min($bbox[0],$bbox[2],$bbox[4],$bbox[6]);
        $bbox["height"] = max($bbox[1],$bbox[3],$bbox[5],$bbox[7]) - min($bbox[1],$bbox[3],$bbox[5],$bbox[7]);
       
        return $bbox;
    }
2005-06-11 00:32:41
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
TTF character charmap page
Could use some help in reading ttf file
so that unused rectangle chars are filtered out of the charmap
see
http://www.phpenabled.com/ttf_fontlist/
fontlist.php?font=Phones_NormalA.ttf
2005-11-04 10:01:50
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Most of functions shared here seems only work with western language and is not suitable for multibyte characters (like Chinese). I have written a function using mb_string functions to match the need of multibyte character word wrapping.

I also added some machanism so that English word won't be cut off at the end of line. Of couse you must use unicode string on GD.

function mb_wordwrap($txt,$font,$size,$width) {
    $pointer = 0;
    $this_line_start = 0;
    $this_line_strlen = 1;
    $single_byte_stack = "";
    $result_lines = array();
    while ($pointer <= mb_strlen($txt)) {
        $this_char = mb_substr($txt,$pointer,1);
        $tmp_line = mb_substr($txt, $this_line_start, $this_line_strlen);
        $tmp_line_bbox = imagettfbbox($size,0,$font,$tmp_line);
        $this_line_width = $tmp_line_bbox[2]-$tmp_line_bbox[0];
        if ($this_line_width > $width) {
            // If last word is alphanumeric, put it to next line rather then cut it off
            if ($single_byte_stack != "") {
                $stack_len = mb_strlen($single_byte_stack);
                $this_line_strlen -= $stack_len;
                $pointer -= $stack_len;
            }
            $result_lines[] = mb_substr($txt, $this_line_start, $this_line_strlen-1);
            $this_line_start = $pointer;
            $this_line_strlen = 1;
            $single_byte_stack = "";
        } else {
            // Prevent to cut off english word at the end of line
            // if this character is a alphanumeric character or open bracket, put it into stack
            if (
                (ord($this_char)>=48 && ord($this_char)<=57) || 
                (ord($this_char)>=65 && ord($this_char)<=91) || 
                (ord($this_char)>=97 && ord($this_char)<=123) || 
                ord($this_char)==40 || 
                ord($this_char)==60 || 
                ($single_byte_stack=="" && (ord($this_char)==34 || ord($this_char)==39))
            ) $single_byte_stack .= $this_char;
            else $single_byte_stack = ""; // Clear stack if met multibyte character and not line end
            $this_line_strlen++;
            $pointer++;
        }
    }
    // Move remained word to result
    $result_lines[] = mb_substr($txt, $this_line_start);
   
    return $result_lines;
}
2005-11-22 14:49:16
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
see http://php.rinet.ru/manual/ru/function.imagettftext.php#57416 

function ByteCount($s) {
    $has_mbstring = extension_loaded('mbstring') ||@dl(PHP_SHLIB_PREFIX.'mbstring.'.PHP_SHLIB_SUFFIX);
    $has_mb_shadow = (int) ini_get('mbstring.func_overload');
   
    if ($has_mbstring && ($has_mb_shadow & 2) ) {
       $size = mb_strlen($s,'latin1');
    } else {
       $size = strlen($s);
    }
    return $size;
}

function foxy_utf8_to_nce($s) {
  $utf = "$s";
 
  $max_count = 5; // flag-bits in $max_mark ( 1111 1000 == 5 times 1)
  $max_mark = 248; // marker for a (theoretical ;-)) 5-byte-char and mask for a 4-byte-char;

  $html = '';
  $ByteCount = ByteCount($utf);
  for($str_pos = 0; $str_pos < $ByteCount; $str_pos++) {
    $old_chr = $utf{$str_pos};
    $old_val = ord($old_chr);
    $new_val = 0;

    $utf8_marker = 0;

    // skip non-utf-8-chars
    if ($old_val > 127) {
      $mark = $max_mark;
      for ($byte_ctr = $max_count; $byte_ctr > 2; $byte_ctr--) {
        // actual byte is utf-8-marker?
        if (($old_val & $mark) == (($mark << 1) & 255)) {
          $utf8_marker = $byte_ctr - 1;
          break;
        }
        $mark = ($mark << 1) & 255;
      }
    }
   
    // marker found: collect following bytes
    if ($utf8_marker > 1 and isset($utf{$str_pos + 1})) {
      $str_off = 0;
      $new_val = $old_val & (127 >> $utf8_marker);
      for($byte_ctr = $utf8_marker; $byte_ctr > 1; $byte_ctr--) {
        // check if following chars are UTF8 additional data blocks
        // UTF8 and ord() > 127
        if( (ord($utf{$str_pos + 1}) & 192) == 128 ) {
          $new_val = $new_val << 6;
          $str_off++;
          // no need for Addition, bitwise OR is sufficient
          // 63: more UTF8-bytes; 0011 1111
          $new_val = $new_val | ( ord( $utf{$str_pos + $str_off} ) & 63 );
        }
        // no UTF8, but ord() > 127
        // nevertheless convert first char to NCE
        else {
          $new_val = $old_val;
        }
      }
      // build NCE-Code
      $html .= '&#'.$new_val.';';
      // Skip additional UTF-8-Bytes
      $str_pos = $str_pos + $str_off;
    } else {
      $html .= chr($old_val);
      //$new_val = $old_val;
    }
  }
  return $html;
}
2005-12-11 07:38:59
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I have revised my mb_wordwrap function to fix 2 major bugs: cannot handle line break and infinite loop while handling very very long long long single byte word.

<?php
function mb_wordwrap($txt,$font,$size,$width) {
   
$pointer 0// Current character position pointer
   
$this_line_start 0// Starting character position of current line
   
$this_line_strlen 1// How long is the current line
   
$single_byte_stack ""// Variable for storing single byte word
   
$sbs_line_width 0// Pixel width of the Single byte word
   
$this_is_cr FALSE// Check if the character is new line code (ASCII=10)
   
$result_lines = array(); // Array for storing the return result
   
   
while ($pointer mb_strlen($txt)) {
       
$this_char mb_substr($txt,$pointer,1);
        if (
ord($this_char[0])==10$this_is_cr TRUE// Check if it is a new line
        // Check current line width
       
$tmp_line mb_substr($txt$this_line_start$this_line_strlen);
       
$tmp_line_bbox imagettfbbox($size,0,$font,$tmp_line);
       
$this_line_width $tmp_line_bbox[2]-$tmp_line_bbox[0];
       
       
// Prevent to cut off english word at the end of line
        // if this character is a alphanumeric character or open bracket, put it into stack
       
if (is_alphanumeric($this_char$single_byte_stack)) $single_byte_stack .= $this_char;
       
// Check the width of single byte words
       
if ($single_byte_stack != "") {
           
$tmp_line_bbox imagettfbbox($size,0,$font,$single_byte_stack);
           
$sbs_line_width $tmp_line_bbox[2]-$tmp_line_bbox[0];
        }
       
        if (
$this_is_cr || $this_line_width $width || $sbs_line_width >= $width) {
           
// If last word is alphanumeric, put it to next line rather then cut it off
           
if ($single_byte_stack != "" && is_alphanumeric($this_char$single_byte_stack) && $sbs_line_width $width) {
               
$stack_len mb_strlen($single_byte_stack);
               
$this_line_strlen $this_line_strlen $stack_len 1;
               
$pointer $pointer $stack_len 1;
            }
           
// Move the current line to result array and reset all counter
           
$result_lines[] = mb_substr($txt$this_line_start$this_line_strlen-1);
            if (
$this_is_cr) { $pointer++; $this_is_cr=FALSE; }
            if (
$sbs_line_width >= $width$sbs_line_width 0;
           
$this_line_start $pointer;
           
$this_line_strlen 1;
           
$single_byte_stack "";
        } else {
            if (!
is_alphanumeric($this_char$single_byte_stack)) {
               
$single_byte_stack ""// Clear stack if met multibyte character and not line end
           
}
           
$this_line_strlen++;
           
$pointer++;
        }
    }
   
// Move remained word to result
   
$result_lines[] = mb_substr($txt$this_line_start);
   
    return 
$result_lines;
}

function 
is_alphanumeric($character$stack) {
    if (
                (
ord($character)>=48 && ord($character)<=57) || 
                (
ord($character)>=65 && ord($character)<=91) || 
                (
ord($character)>=97 && ord($character)<=123) || 
               
ord($character)==40 || 
               
ord($character)==60 || 
                (
$stack=="" && (ord($character)==34 || ord($character)==39))
            ) return 
TRUE;
            else return 
FALSE;
}
?>
2005-12-11 11:31:21
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Another function for centered text string.
What it does: Generate a truecolor .png image of a text string. The image will be just large enough encompass the text and a 2 px border and the text will be centered in it.

It is called from any other page like so...
<img src="linkImg.php?text=php.net is great&border=out" /> // Text with #&+"'\<> will need to be escaped, but I've found spaces don't cause errors. I haven't tested this with any other languages.

The following code is the file named linkImg.php
The file was not designed to have anything else here with it, and the open and close php tags should the the very first and very last characters of the page respectively, as outside whitespace can be a little evil sometimes.
<?php 
//Obtain text and border via GET
//Border can be out, in, or flat
$text $_GET['text'];
$border $_GET['border'];
 
 
$font "fontpath"//(str) "fonts/sasquatchlives.ttf"
 
$fontsize font size//(int) pixels in GD 1, or points in GD 2

//Register box
$box imagettfbbox ($fontsize0$font$text);
//Find out the width and height of the text box
$textW $box[2] - $box[0];
$textH$box[3]-$box[5];
//Add padding
$paddingx 10;
$paddingy 10;
//Set image dimentions
$width $textW+$paddingx;
$height$textH+$paddingy;

//Bottom left corner of text
$textx $paddingx/2;
$texty $height $paddingy/2;

//Shadow offset (pixels)
$shadoffx 1;
$shadoffy 1;

//Create the image
 
$img imagecreatetruecolor($width,$height);
//Define some colors
 
$white imagecolorallocate($img,255,255,255);
 
$black imagecolorallocate($img,0,0,0);
 
$lightgrey imagecolorallocate($img,200,200,200);
 
$grey imagecolorallocate($img,100,100,100);
//Define Text (fg) and background (bg) colors
 
$bgcol imagecolorallocate($img,192,213,196); //Celadon (light pastel green)
 
$fgcol imagecolorallocate($img,243,104,88); //Peach
// Fill image with background color
 
imagefill($img,0,0,$bgcol); 

//Write Shadow
imagettftext($img$fontsize0$textx+$shadoffx$texty+$shadoffy$grey$font$text);

//Write Text
imagettftext($img$fontsize0$textx$texty$fgcol$font$text);

//Bordering

   //Embossed border (button-looking)
 
if ($border == "out"
  {
   
imageline ($img,0,0,$width,0,$white);imageline ($img,0,0,0,$height,$white);
   
imageline ($img,1,1,$width,1,$lightgrey);imageline ($img,1,1,1,$height-1,$lightgrey);
   
imageline ($img,0,$height-1,$width-1,$height-1,$black);imageline ($img,$width-1,$height-1,$width-1,0,$black);
   
imageline ($img,2,$height-2,$width-2,$height-2,$grey);imageline ($img,$width-2,$height-2,$width-2,2,$grey);

  }
   
//Flat border
 
if ($border == "flat"
  {
   
imageline ($img,0,0,$width,0,$white);imageline ($img,0,0,0,$height,$white);
   
imageline ($img,1,1,$width,1,$grey);imageline ($img,1,1,1,$height-1,$grey);
   
imageline ($img,0,$height-1,$width-1,$height-1,$white);imageline ($img,$width-1,$height-1,$width-1,0,$white);
   
imageline ($img,2,$height-2,$width-2,$height-2,$grey);imageline ($img,$width-2,$height-2,$width-2,2,$grey);
  }

   
//Engraved border (pushed button)
 
if ($border == "in"
  {
   
imageline ($img,0,0,$width,0,$black);imageline ($img,0,0,0,$height,$black);
   
imageline ($img,1,1,$width,1,$grey);imageline ($img,1,1,1,$height-1,$grey);
   
imageline ($img,0,$height-1,$width-1,$height-1,$white);imageline ($img,$width-1,$height-1,$width-1,0,$white);
   
imageline ($img,2,$height-2,$width-2,$height-2,$lightgrey);imageline ($img,$width-2,$height-2,$width-2,2,$lightgrey);
  }

// Header info
 
header("Content-type: image/png");
//Sends the image
 
imagepng($img);
 
imagedestroy($img);
?>

Hope this helps someone!
-Patrick-
2005-12-28 20:41:31
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
My previous function had 2 bugs which are now fixed:
* Align is now pixel perfect, no longer dependant on the first character. Solved by putting a space " " in front of every rendered line, making the basepoint at the exact same place every time.
* X Y Coordinates are no longer the base-point, but the perfect top/left coordinates. This made my life designing a LOT easier.

Features:
* Newline support! (both Windows and Linux)
* Paragraph support, no newlines are ignored, not even empty ones. So empty lines are properly supported.
* True top/left x/y coordinates instead of TTF basepoint.(at least as close as possible).
* Align function for Left, Center and Right
* Support for words that are longer then the supported width.

<?php
//A function for pixel precise text Wrapping
function imageTextWrapped(&$img$x$y$width$font$color$text$textSize$align="l") {
   
//Recalculate X and Y to have the proper top/left coordinates instead of TTF base-point
   
$y += $textSize;
   
$dimensions imagettfbbox($textSize0$font" "); //use a custom string to get a fixed height.
   
$x -= $dimensions[4]-$dimensions[0];

   
$text str_replace ("\r"''$text); //Remove windows line-breaks
   
$srcLines split ("\n"$text); //Split text into "lines"
   
$dstLines = Array(); // The destination lines array.
   
foreach ($srcLines as $currentL) {
       
$line '';
       
$words split (" "$currentL); //Split line into words.
       
foreach ($words as $word) {
           
$dimensions imagettfbbox($textSize0$font$line.$word);
           
$lineWidth $dimensions[4] - $dimensions[0]; // get the length of this line, if the word is to be included
           
if ($lineWidth $width && !empty($line) ) { // check if it is too big if the word was added, if so, then move on.
               
$dstLines[] = ' '.trim($line); //Add the line like it was without spaces.
               
$line '';
            }
           
$line .= $word.' ';
        }
       
$dstLines[] =  ' '.trim($line); //Add the line when the line ends.
   
}
   
//Calculate lineheight by common characters.
   
$dimensions imagettfbbox($textSize0$font"MXQJPmxqjp123"); //use a custom string to get a fixed height.
   
$lineHeight $dimensions[1] - $dimensions[5]; // get the heightof this line

   
$align strtolower(substr($align,0,1)); //Takes the first letter and converts to lower string. Support for Left, left and l etc.
   
foreach ($dstLines as $nr => $line) {
        if (
$align != "l") {
           
$dimensions imagettfbbox($textSize0$font$line);
           
$lineWidth $dimensions[4] - $dimensions[0]; // get the length of this line
           
if ($align == "r") { //If the align is Right
               
$locX $x $width $lineWidth;
            } else { 
//If the align is Center
               
$locX $x + ($width/2) - ($lineWidth/2);
            }
        } else { 
//if the align is Left
           
$locX $x;
        }
       
$locY $y + ($nr $lineHeight);
       
//Print the line.
       
imagettftext($img$textSize0$locX$locY$color$font$line);
    }       
}

?>
2006-01-13 10:32:11
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Have a problem with imagettfbbox cutting off the hang of letters such as 'g' or 'j'??

After days trying to figure this thing out, I finally cracked it:

  $size = imagettfbbox($s,0,$font,$text);
  $dx=abs($size[0])+abs($size[2]);
  $dy=abs($size[1])+abs($size[7]);

  ImageTTFText($im, $s, 0, $dx-abs($size[0]), $dy-abs($size[1]), $black, $font, $text);

The key is the abs commands - you must account for the negative numbers in the original imagettfbbox, and if you have any, take them away from the location at the end when the text is displayed:

you need to start the x and y at a (possibly) negative number, not 0,0 as I had thought.

Hope that helps someone..
2006-02-11 16:23:24
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
Tried Greg's code below, but it didn't quite work for me. This did, however:

<?php

$size 
imagettfbbox($fontSize0$font$text);
$width $size[2] + $size[0];
$height abs($size[1]) + abs($size[7]);

$image imagecreatetruecolor($width$height); 

imagettftext($image$fontSize00abs($size[5]), $black$font$text);

?>
2006-02-26 03:48:15
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Neither Greg's or Henrik N's code worked for me.

I figured out that imagettfbbox gives the size (coordinates) of the whole letter (ie. with the hang on 'g' or 'j'). So it was only a matter of finding the correct index of coordinates in the array.

Note: This doesn't work on Times New Roman Italic's 'f' for some reason.

<?php

    $size 
imagettfbbox($fontsize0$font$text);
   
$dx abs($size[2]-$size[0]);
   
$dy abs($size[5]-$size[3]);

   
ImageTTFText($im$fontsize0abs($size[6]), abs($size[5]), $txtcolor$font$text);

?>
2006-02-28 09:41:18
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I've modified Nimja's function a little. It doesn't support line-breaks (didn't need it in my script), but it's easy enough to add in.

<?php

function imageWordWrapBBox $Text$Width 650$FontSize 10$Font './fonts/arial.ttf' )
{
   
$Words split ' '$Text );
   
$Lines = array ( );
   
$Line  '';

    foreach ( 
$Words as $Word )
    {
       
$Box  imagettfbbox $FontSize0$Font$Line $Word );
       
$Size $Box[4] - $Box[0];
        if ( 
$Size $Width )
        {
           
$Lines[] = trim $Line );
           
$Line    '';
        }
       
$Line .= $Word ' ';
    }
   
$Lines[] = trim $Line );

   
$Dimensions imagettfbbox $FontSize0$Font'AJLMYabdfghjklpqry019`@$^&*(,' );
   
$lineHeight $Dimensions[1] - $Dimensions[5];

    return array ( 
$lineHeight$Lines$lineHeight count $Lines ) );
}

function 
imageWordWrap $Text$Width$Color$X 0$Y 0$FontSize 10$Font './fonts/arial.ttf' )
{
   
$Data $this->imageWordWrapBBox $Text$Width$FontSize$Font );

    foreach ( 
$Data[1] as $Key => $Line )
    {
       
$locX $X;
       
$locY $Y + ( $Key $Data[0] );
       
imagettftext $this->Image$FontSize0$locX$locY$Color$Font$Line );
    }

    return 
$Data;
}
?>
2006-05-05 16:32:08
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
Warning: 
james.logsdon's function has a few flaws in copying my own function. Though he did a great job in making an overall nicer looking function it does have a few flaws.

His function does not allow for long words (longer then the width) linebreaks (harder then it looks) and has a non-pixel perfect location.

The problem with the imagettfbbox function is that different letters give a different x/y top-left coordinate. At least it looks that way for the eye. I 'solved' this by putting a space in front of every line and then offset the text by the width of that space.

So, although some things of my function seem useless they do serve an important purpose.
2006-05-08 04:09:47
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
Please note that as imageTTFBbox and imageTTFText functions return an array of coordinates which could be negative numbers care must be taken with height and width calculations.

The rigth way to do that is to use the abs() function:

for an horizontal text:

$box = @imageTTFBbox($size,0,$font,$text);
$width = abs($box[4] - $box[0]);
$height = abs($box[5] - $box[1]);

Then to center your text at ($x,$y) position the code should be like that:

$x -= $width/2;
$y += $heigth/2;

imageTTFText($img,$size,0,$x,$y,$color,$font,$text);

this because (0,0) page origin is topleft page corner and (0,0) text origin is lower-left readable text corner.

Hope this help.
2006-07-31 09:13:00
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
There's a bit of an annoyance with measuring font sizes and drawing boxes around text. When fonts are measured using ImageTTFbbox, the correct vertical height is returned. That is, the measurement of the phrase "Hanging" will be from the top of the "H" to the bottom of the "g".

The problem is that functions like imageTTFtext align with the "line" of the text - that is, in the phrase "Hanging", the alignment is below the "H", not the bottom of the "g". That means that if you draw a rectangle behind your text, it'll be incorrectly aligned because the hanging "g" will be outside the box.

For example, this doesn't work as you might expect (because the "g" hangs below the box):
<?php
// Get the size of the font box
$textbox imageTTFBbox($size0$font'Hanging');
$textwidth abs($textbox[4] - $textbox[0]);
$textheight abs($textbox[5] - $textbox[1]);

// Now draw a rectangle on the image
$colour ImageColorAllocate($im100100100);
imagefilledrectangle($im$x$y $textheight$x $textwidth$y$colour );

// Now draw the text
$black ImageColorAllocate($im000);
ImageTTFText($image['resource'], $size0$x$y$black$font'Hanging');
?>
It also seems that the rectangle in the above example is located 1 pixel to the left of the text.

I haven't found a way to resolve this problem correctly. Instead, I have enlarged the rectangle and then put the text into it. I don't think this will work absolutely correctly for all fonts, so it's not exactly a perfect solution. However, it's better than nothing! Here is a snippet of it:
<?php
$enlargex 
$textwidth 0.08;
$enlargey $textheight 0.1;
$enlargey2 $textheight 0.5;

// Now draw a rectangle on the image
$colour ImageColorAllocate($im100100100);
imagefilledrectangle($im$x $enlargex$y $textheight $enlargey$x $textwidth $enlargex$y $enlarge2$colour );
?>
2007-04-23 12:16:40
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Ralph Bolton commented about the difference in calculating the bounding box size vs. aligning text base line. 

The workaround for this issue is to calculate the difference in height between a character going below baseline and one above the baseline. This is likely going to vary from font to font, so I'd suggest something like this:

<?php

function fontBaselineOffset($font$fontSize)
{
//this should be above baseline
$test2="H";
//some of these additional letters should go below it
$test3="Hjgqp";

//get the dimension for these two:

$box2 imageTTFBbox($fontSize,0,$font,$test2);
$box3 imageTTFBbox($fontSize,0,$font,$test3);

//return the offset value

return  abs((abs($box2[5]) + abs($box2[1])) - (abs($box3[5]) + abs($box3[1])));

}
?>

This is not perfect yet. You should define a range of allowed characters that can go below baseline, compare them to the ones actually found in your string and use them instead of the string $test3 used in the example function above. This should avoid problems with letters that go further below baseline than the others (e.g. there could be a difference between 'g' and 'p')
2007-05-24 07:46:16
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I have been testing this function for a while now and have come up with many of the same issues that other people have touched upon.  Not being able to calculate the width of the text correctly.  Or if a solution is found then it won't work with a hanging letter or a negative start letter like 'j'.

Like Ralph I also wanted to draw a box around some text and this would require me being pixel perfect with the font.  The trouble is I did not know which font would be used or which size.  This led me to come up with a solution which I am sharing below.

<?php
function imagettfbboxextended($size$angle$fontfile$text) {
   
/*this function extends imagettfbbox and includes within the returned array
    the actual text width and height as well as the x and y coordinates the 
    text should be drawn from to render correctly.  This currently only works
    for an angle of zero and corrects the issue of hanging letters e.g. jpqg*/
   
$bbox imagettfbbox($size$angle$fontfile$text);

   
//calculate x baseline
   
if($bbox[0] >= -1) {
       
$bbox['x'] = abs($bbox[0] + 1) * -1;
    } else {
       
//$bbox['x'] = 0;
       
$bbox['x'] = abs($bbox[0] + 2);
    }

   
//calculate actual text width
   
$bbox['width'] = abs($bbox[2] - $bbox[0]);
    if(
$bbox[0] < -1) {
       
$bbox['width'] = abs($bbox[2]) + abs($bbox[0]) - 1;
    }

   
//calculate y baseline
   
$bbox['y'] = abs($bbox[5] + 1);

   
//calculate actual text height
   
$bbox['height'] = abs($bbox[7]) - abs($bbox[1]);
    if(
$bbox[3] > 0) {
       
$bbox['height'] = abs($bbox[7] - $bbox[1]) - 1;
    }

    return 
$bbox;
}
?>

The function above gives the correct x and y coordinates that the text should be drawn from and also gives the actual image width and height.  This has been tested with various fonts and sizes ranging from 6 up to 144 points.  Some of the output will appear to be incorrect and have an extra pixel on the right, using verdana at size 144 and outputting the character 'Q' for example.  This is not an error as this is part of the anti-aliasing of the font output.

Example Usage:
<?php
$font 
'c:\windows\fonts\verdana.ttf';
$font_size 144;
$text 'jÜyZgQ';
$bbox imagettfbboxextended($font_size0$font$text);
?>

Return Values:
Array
(
    [0] => -8
    [1] => 40
    [2] => 715
    [3] => 40
    [4] => 715
    [5] => -177
    [6] => -8
    [7] => -177
    [x] => 6
    [width] => 722
    [y] => 176
    [height] => 216
)

Further notes can be found here along with images of the output of the function http://mikeleigh.com/links/imagettfbbox
2007-05-28 10:05:00
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
This script shows you side by side the difference between a font rendered at a certain size and the same font rendered at some multiple of that size and then scaled down by the same multiple. It seems to help small sizes and affects large ones less. This script lets you see if it is worth implementing for your situation. Included is the great "imagettfbboxextended" function by mike at mikeleigh dot com below.

$size = 30;
$factor = 16;

$smallSize = imagettfbboxextended($size, 0, "fonts/MPlantin.ttf", "The quick brown fox jumps over the lazy dog.");
$smallWidth = $smallSize['width'];
$smallHeight = $smallSize['height'];
$canvas = imagecreatetruecolor($smallWidth + 20, $smallHeight * 2 + 20);
imagefill($canvas, 0, 0, imagecolorallocate($canvas, 255, 255, 255));
imagettftext($canvas, $size, 0, 10 + $smallSize['x'], 10 + $smallSize['y'], imagecolorallocate($canvas, 0, 0, 0), "fonts/MPlantin.ttf", "The quick brown fox jumps over the lazy dog.");

$largeSize = imagettfbboxextended($size * $factor, 0, "fonts/MPlantin.ttf", "The quick brown fox jumps over the lazy dog.");
$largeWidth = $largeSize['width'];
$largeHeight = $largeSize['height'];
$temp = imagecreatetruecolor($largeWidth, $largeHeight);
imagefill($temp, 0, 0, imagecolorallocate($canvas, 255, 255, 255));
imagettftext($temp, $size * $factor, 0, $largeSize['x'], $largeSize['y'], imagecolorallocate($temp, 0, 0, 0), "fonts/MPlantin.ttf", "The quick brown fox jumps over the lazy dog.");
imagecopyresampled($canvas, $temp, 10 + $smallSize['x'], 10 + $smallSize['y'] + 10, 0, 0, $smallWidth, $smallHeight, $largeWidth, $largeHeight);
imagepng($temp, "temp.png");

imagepng($canvas, "test.png");

function imagettfbboxextended($size, $angle, $fontfile, $text) {
    /*this function extends imagettfbbox and includes within the returned array
    the actual text width and height as well as the x and y coordinates the
    text should be drawn from to render correctly.  This currently only works
    for an angle of zero and corrects the issue of hanging letters e.g. jpqg*/
    $bbox = imagettfbbox($size, $angle, $fontfile, $text);

    //calculate x baseline
    if($bbox[0] >= -1) {
        $bbox['x'] = abs($bbox[0] + 1) * -1;
    } else {
        //$bbox['x'] = 0;
        $bbox['x'] = abs($bbox[0] + 2);
    }

    //calculate actual text width
    $bbox['width'] = abs($bbox[2] - $bbox[0]);
    if($bbox[0] < -1) {
        $bbox['width'] = abs($bbox[2]) + abs($bbox[0]) - 1;
    }

    //calculate y baseline
    $bbox['y'] = abs($bbox[5] + 1);

    //calculate actual text height
    $bbox['height'] = abs($bbox[7]) - abs($bbox[1]);
    if($bbox[3] > 0) {
        $bbox['height'] = abs($bbox[7] - $bbox[1]) - 1;
    }

    return $bbox;
}
2007-05-30 04:36:03
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
It took me some time to make full use of imagettfbbox. Hopefully the following function makes it much easier to use for others.

<?php
function convertBoundingBox ($bbox) {
    if (
$bbox[0] >= -1)
       
$leftOfBasepoint = -abs($bbox[0] + 1);
    else
       
$leftOfBasepoint abs($bbox[0] + 2);
   
$rightOfBasepoint abs($bbox[2] - $bbox[0]);
    if (
$bbox[0] < -1$rightOfBasepoint abs($bbox[2]) + abs($bbox[0]) - 1;
   
$aboveBasepoint abs($bbox[5] + 1);
   
$height abs($bbox[7]) - abs($bbox[1]);
    if (
$bbox[3] > 0$height abs($bbox[7] - $bbox[1]) - 1;
   
$width $leftOfBasepoint $rightOfBasepoint;
   
$belowBasepoint $height $aboveBasepoint;
    return array(
       
'width' => $width,
       
'height' => $height,
       
'leftOfBasepoint' => $leftOfBasepoint,
       
'rightOfBasepoint' => $rightOfBasepoint,
       
'aboveBasepoint' => $aboveBasepoint,
       
'belowBasepoint' => $belowBasepoint
   
);
}
?>

Thanks goes to mike at mikeleigh dot com for providing the core of this function.

Remember, the basepoint is the x, y coords you use to draw text with imagettftext. A useful thing to do is take a string like...
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890
...and use the "aboveBasepoint" value for the height of your font. Now you can draw lines and use "the height of your font * leading" as the distance between lines of text, where leading is a number like 1.45 (for 45% leading).
2007-06-01 03:07:18
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
An improvement to the convertBoundingBox function. The previous function was completely wrong. My confusion came from characters like "1" and "_" that are rendered to the right or below the basepoint (in the font I'm using). I ended up using mike at mikeleigh dot com's function with a fix for these characters, and a "belowBasepoint" value.
<?php
function convertBoundingBox ($bbox) {
    if (
$bbox[0] >= -1)
       
$xOffset = -abs($bbox[0] + 1);
    else
       
$xOffset abs($bbox[0] + 2);
   
$width abs($bbox[2] - $bbox[0]);
    if (
$bbox[0] < -1$width abs($bbox[2]) + abs($bbox[0]) - 1;
   
$yOffset abs($bbox[5] + 1);
    if (
$bbox[5] >= -1$yOffset = -$yOffset// Fixed characters below the baseline.
   
$height abs($bbox[7]) - abs($bbox[1]);
    if (
$bbox[3] > 0$height abs($bbox[7] - $bbox[1]) - 1;
    return array(
       
'width' => $width,
       
'height' => $height,
       
'xOffset' => $xOffset// Using xCoord + xOffset with imagettftext puts the left most pixel of the text at xCoord.
       
'yOffset' => $yOffset// Using yCoord + yOffset with imagettftext puts the top most pixel of the text at yCoord.
       
'belowBasepoint' => max(0$bbox[1])
    );
}
?>
2007-06-01 15:11:21
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
Several comments show that the output of this function is often not what is expected, especially when the text is rotated.

For those of you who'd like a visual representation of what is happening to the bounding box as the text is rotated, take a look here:

http://ruquay.com/sandbox/imagettf/
2007-06-04 07:12:09
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Apparently the bounding box returned by imagettftext and imagettfbbox is not the same, and it appears as though imagettftext does a better job at calculating the actual bounding box (maybe because it has to render every character and it then finds out really everywhere it rendered).

So, you can create a dummy image render the text to it and get a better box. Here is an example function:
<?php
function better_imagettfbbox($size$angle$font$text) {
 
$dummy imagecreate(11);
 
$black imagecolorallocate($dummy000);
 
$bbox imagettftext($dummy$size$angle00$black$font$text);
 
imagedestroy($dummy);
  return 
$bbox;
}
?>
If you use this a lot, it would be better to keep one dummy image instead of continually creating and destroying images.
2007-07-11 00:11:23
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
I still got problems trying to rotate imagettftext using imagettfbbox.

It's position calculation is mostly wrong. So i tried to rotate ttftext with IMAGEROTATE. 

As a special the result is in black fontcolor and transparent background.

Hope it helps sombody (thanks for function convertBoundingBox, reading below)

<?
function ImgText($text,$fontsize,$font,$angle){
$im '';
    if(
$text){
        if(!
$fontsize || $fontsize 1$fontsize 12;
        if(!
$font$font "fonts/arial.ttf";
       
$bbox imagettfbbox($fontsize0$font$text);
       
$size=convertBoundingBox($bbox);
       
$im ImageCreatetruecolor($size['width'],$size['height']);

       
$white ImageColorAllocate($im255255255);
       
$black ImageColorAllocate($im0,0,0);
       
       
imagefill ($im00$white );
       
imagettftext($im$fontsize0$size['xOffset'], $size['yOffset'], $black$font$text);
       
$im imagerotate$im,$angle$white);
       
imagecolortransparent ($im,$white);
    }else{
       
// No text
   
}
}
?>
2007-08-30 02:45:49
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
the imagettfbbox and imagettftext quirks are:

1. imagettfbbox and imagettftext have the same return value and both of them are wrong for angle not equal to zero.
2. imagettfbbox returns the correct bounding box when angle is zero.
3. the bounding box has a coordinate system that the x gets bigger from left to right and y gets bigger from top to bottom.
4. the "base point" used in imagettftext is the origin in the bounding box coordinate system.
5. when the angle is other than 0, it is actually rotated in the coordinate system with respect to the base point. so if we know the bounding box coordinate when angle is zero, we can get the new bounding box coordinate by doing the rotation by math equations manually.
6. to have pixel level accuracy, we should also be aware of another thing. suppose the axis is like this: |_|_|_|, the bounding box coordinate uses point on the vertical line while image function uses point on the horizontal line, so there is a 1 pixel difference you should take care of.

The following snippet creates minimal images containing a letter of different font and rotation angle. This is especially useful in captcha scripts.

<?php

function create_font_image$size$angle$font$char )
{
   
$rect imagettfbbox$size0$font$char );
    if( 
== $angle ) {
       
$imh $rect[1] - $rect[7];
       
$imw $rect[2] - $rect[0];
       
$bx = -$rect[0];
       
$by = -$rect[7];
    } else {
       
$rad deg2rad$angle );
       
$sin sin$rad );
       
$cos cos$rad );
        if( 
$angle ) {
           
$tmp $rect[6] * $cos $rect[7] * $sin;
           
$bx = -round$tmp );
           
$imw round$rect[2] * $cos $rect[3] * $sin $tmp );
           
$tmp $rect[5] * $cos $rect[4] * $sin;
           
$by = -round$tmp );
           
$imh round$rect[1] * $cos $rect[0] * $sin $tmp );
        } else {
           
$tmp $rect[0] * $cos $rect[1] * $sin;
           
$bx = -round$tmp );
           
$imw round$rect[4] * $cos $rect[5] * $sin $tmp );
           
$tmp $rect[7] * $cos $rect[6] * $sin;
           
$by = -round$tmp );
           
$imh round$rect[3] * $cos $rect[2] * $sin $tmp );
        }
    }
   
$im imagecreatetruecolor$imw$imh );
   
imagefill$im00imagecolorallocate$im2550255 ) );
   
imagettftext$im$size$angle$bx$byimagecolorallocate$im00), $font$char );
   
imagegif$imtrim$font'./' ) . ord$char ) . $angle '.gif' );
   
imagedestroy$im );
}

$chars 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
$angles = array( -30, -20, -100102030 );
$fonts = array( './latinwide.ttf''./verdana.ttf''./times.ttf''./broadway.ttf' );
foreach( 
$angles as $angle )
    foreach( 
$fonts as $font )
        for( 
$i 0$i strlen$chars ); ++$i )
           
create_font_image100$angle$font$chars[$i] );
?>
2008-01-07 06:18:45
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
To get the height for a line of text, I've found it useful to do:

<?php

$bbox 
imagettfbbox($size0$ttf" \n "); // space, newline, space

$height $bbox[3] - $bbox[5];

?>

I hope this helps. Before, I used the string "Tj", but that sometimes fell short, especially for crazy fonts.
2008-04-14 18:57:35
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
If you're looking for easy text alignment, you need to use the imagettfbbox() command. When given the correct parameters, it will return the boundaries of your to-be-made text field in an array, which will allow you to calculate the x and y coordinate that you need to use for centering or aligning your text.

A horizontal centering example:

<?php

$tb 
imagettfbbox(170'airlock.ttf''Hello world!');

?>

$tb would contain:

Array
(
    [0] => 0 // lower left X coordinate
    [1] => -1 // lower left Y coordinate
    [2] => 198 // lower right X coordinate
    [3] => -1 // lower right Y coordinate
    [4] => 198 // upper right X coordinate
    [5] => -20 // upper right Y coordinate
    [6] => 0 // upper left X coordinate
    [7] => -20 // upper left Y coordinate
)

For horizontal alignment, we need to substract the "text box's" width { $tb[2] or $tb[4] } from the image's width and then substract by two.

Saying you have a 200px wide image, you could do something like this:

<?php

$x 
ceil((200 $tb[2]) / 2); // lower left X coordinate for text
imagettftext($im170$x$y$tc'airlock.ttf''Hello world!'); // write text to image

?>

This'll give you perfect horizontal center alignment for your text, give or take 1 pixel. Have fun!
2008-05-16 13:14:30
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I worked out a script that allows the transfer of alphanumeric data to be placed on an image. The HTML feature is img src and the php feature is imagettftext. This simple code will increment from 1 to 3 on images.

code:

<?php
//ImageCall.php -- This script will call a script to produce the image.
for($next 1;$next 4$next++){
print 
"Image $next:<br>";
print 
"<img src = 'Image.php?\$text=$next'>";
print 
"<br><br>";
}
?>

<?php
//Image.php -- This script creates a square image and places the text on it.

// image size and color
$im ImageCreate(77,77);
$color1 ImageColorAllocate($im,0x66,0xCC,0x00);
$color2 ImageColorAllocate($im,0x33,0x66,0x00);
$color3 ImageColorAllocate($im,0x00,0x99,0x00);
$color4 ImageColorAllocate($im,0x3D,0x3D,0x3D);

// image creation
ImageFilledRectangle($im,1,1,76,76,$color1);
ImageFilledpolygon($im, array (76,1,1,76,76,76),3,$color2);
ImageFilledRectangle($im,5,5,72,72,$color3);

// determine numeric center of image
$size ImageTTFBBox(45,0,'impact',$_GET['$text']);
$X = (77 - (abs($size[2]- $size[0])))/2;
$Y = ((77 - (abs($size[5] - $size[3])))/+ (abs($size[5] - $size[3])));

//places numeric information on image
ImageTTFText($im,45,0,($X-1),$Y,$color4,'impact',$_GET['$text']);

//returns completed image to calling script
Header('Content-Type: image/png');
Imagepng($im);

?>
2008-05-30 14:13:02
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I was viewing the code for calculate the box of a text for a given font but I do not found one that works fine with different angles from zero, so I have made a function simpler than above:

<?php

function calculateTextBox($text,$fontFile,$fontSize,$fontAngle) {
 
$rect imagettfbbox($fontSize,$fontAngle,$fontFile,$text);
 
 
$minX min(array($rect[0],$rect[2],$rect[4],$rect[6]));
 
$maxX max(array($rect[0],$rect[2],$rect[4],$rect[6]));
 
$minY min(array($rect[1],$rect[3],$rect[5],$rect[7]));
 
$maxY max(array($rect[1],$rect[3],$rect[5],$rect[7]));

  return array(
   
"left"   => abs($minX),
   
"top"    => abs($minY),
   
"width"  => $maxX $minX,
   
"height" => $maxY $minY,
   
"box"    => $rect
 
);
}

?>

With this function you can center an angled string in any image:

<?php

  $mystring 
"Hello world!";

 
$imgWidth 300;
 
$imgHeight 150

 
$image imagecreate($imgWidth,$imgHeight);
 
imagefill($image,imagecolorallocate($image,200,200,200));

 
$box calculateTextBox($mystring,"./Verdana.ttf",15,45);
 
$color imagecolorallocate($image,0,0,0);
 
imagettftext($image,
               
15,
               
45,
               
$box["left"] + ($imgWidth 2) - ($box["width"] / 2),
               
$box["top"] + ($imgHeight 2) - ($box["height"] / 2),
               
$color,
               
"./Verdana.ttf",
               
$mystring);

 
header("Content-Type: image/x-png");
 
imagepng($im);
 
imagedestroy($im);

?>
2008-08-22 12:00:40
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
This is a function which reformats a text string into a text block of a given width.
Usefull when you have a long single line string and want to fit it into a fixed width but don't care about it's height

<?php
function makeTextBlock($text$fontfile$fontsize$width)
{   
   
$words explode(' '$text);
   
$lines = array($words[0]);
   
$currentLine 0;
    for(
$i 1$i count($words); $i++)
    {
       
$lineSize imagettfbbox($fontsize0$fontfile$lines[$currentLine] . ' ' $words[$i]);
        if(
$lineSize[2] - $lineSize[0] < $width)
        {
           
$lines[$currentLine] .= ' ' $words[$i];
        }
        else
        {
           
$currentLine++;
           
$lines[$currentLine] = $words[$i];
        }
    }
   
    return 
implode("\n"$lines);
}
?>
2008-10-04 13:11:41
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
SIMPLE OVERLOADED FUNCTION: Adds TTF Center and Right Alignment to co ordintate points.
Correctly demonstrates the use of the bouning box TTF function and the array of coordinates that it returns.

After obtaining values and adjusting based on a set of values [L, C, R], it uses simple math based of the length of the text to move it from the origin (x = 0 )

<?php
function imagettftextalign($image$size$angle$x$y$color$font$text$alignment='L')
{

   
//check width of the text
   
$bbox imagettfbbox ($size$angle$font$text);
   
$textWidth $bbox[2] - $bbox[0];
   switch (
$alignment) {
       case 
"R":
           
$x -= $textWidth;
           break;
       case 
"C":
           
$x -= $textWidth 2;
           break;
   }

   
//write text
   
imagettftext ($image$size$angle$x$y$color$font$text);

}
?>
2008-11-06 13:18:32
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
My solution to below-baseline characters is to simply apply a smaller angle and some padding when calculating your boundaries, so the function thinks your text goes below baseline. For example: 

<?php
// GET BOUNDS OF TEXT
$bounds imagettfbbox($size*1.05$angle-3$font$text);
?>
2009-05-05 22:09:49
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
If $fontfile is a Windows UNC path, it *must* start with //SERVER rather than \\SERVER:

<?php
imagettfbbox
(100'\\\\server\\path\\file.ttf''Hello, World!'); // Warning: imagettfbbox() [http://es.php.net/function.imagettfbbox]: Could not find/open font 
?>
2009-05-22 06:35:48
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
I want to output a bounding box of a text as an image straightly. I did like this:

<?php

$text 
"<?php echo \"hello, world\"; ?>";
$font "./arial.ttf";
$size "60";

$bbox imagettfbbox($size0$font$text);

$width abs($bbox[2] - $bbox[0]);
$height abs($bbox[7] - $bbox[1]);

$image imagecreatetruecolor($width$height);

$bgcolor imagecolorallocate($image255255255);
$color imagecolorallocate($image000);

$x $bbox[0] + ($width 2) - ($bbox[4] / 2);
$y $bbox[1] + ($height 2) - ($bbox[5] / 2);

imagefilledrectangle($image00$width 1$height 1$bgcolor);
imagettftext($image$size0$x$y$color$font$text);

$last_pixelimagecolorat($image00);

for (
$j 0$j $height$j++)
{
    for (
$i 0$i $width$i++)
    {
        if (isset(
$blank_left) && $i >= $blank_left)
        {
            break;
        }

        if (
imagecolorat($image$i$j) !== $last_pixel)
        {
            if (!isset(
$blank_top))
            {
               
$blank_top $j;
            }
           
$blank_left $i;
            break;
        }

       
$last_pixel imagecolorat($image$i$j);
    }
}

$x -= $blank_left;
$y -= $blank_top;

imagefilledrectangle($image00$width 1$height 1$bgcolor);
imagettftext($image$size0$x$y$color$font$text);

header('Content-type: image/png');
imagepng($image);
imagedestroy($image);

?>
2009-08-22 03:57:08
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
As many of you know, this function is bugged in several versions of PHP. It should return the coordinates relative to the baseline of the font. So if your text includes characters like g and p then the bounding box should extend below zero on the Y axis, however it doesn't. This is a problem because imagettftext() positions text using the baseline, so all your text will be misaligned.

My solution is to create an image of the desired font and font-size using all ascii characters with imagettfbbox() and imagettftext(). The height of this image is used as the height for the real image.

I then analyse the image to get the vertical offset of the text (the background color should be $baseColor)
<?php
function getYOffset($image$baseColor) {
    for(
$y 0$y $this->height(); $y++)
        for(
$x 0$x $this->width(); $x++)
            if (
imagecolorat($image$x$y) !== $baseColor
                return 
$y; }
?>

This offset can be used as the baseline for the font (for this font-size). You can use a similar trick for the horizontal offset, but that changes depending on the first character.
2010-04-08 09:18:04
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I wrote a simple function that calculates the *exact* bounding box (single pixel precision).
The function returns an associative array with these keys:
left, top:  coordinates you will pass to imagettftext 
width, height: dimension of the image you have to create

<?php
function calculateTextBox($font_size$font_angle$font_file$text) {
 
$box   imagettfbbox($font_size$font_angle$font_file$text);
  if( !
$box )
    return 
false;
 
$min_x min( array($box[0], $box[2], $box[4], $box[6]) );
 
$max_x max( array($box[0], $box[2], $box[4], $box[6]) );
 
$min_y min( array($box[1], $box[3], $box[5], $box[7]) );
 
$max_y max( array($box[1], $box[3], $box[5], $box[7]) );
 
$width  = ( $max_x $min_x );
 
$height = ( $max_y $min_y );
 
$left   abs$min_x ) + $width;
 
$top    abs$min_y ) + $height;
 
// to calculate the exact bounding box i write the text in a large image
 
$img     = @imagecreatetruecolor$width << 2$height << );
 
$white   imagecolorallocate$img255255255 );
 
$black   imagecolorallocate$img00);
 
imagefilledrectangle($img00imagesx($img), imagesy($img), $black);
 
// for sure the text is completely in the image!
 
imagettftext$img$font_size,
               
$font_angle$left$top,
               
$white$font_file$text);
 
// start scanning (0=> black => empty)
 
$rleft  $w4 $width<<2;
 
$rright 0;
 
$rbottom   0;
 
$rtop $h4 $height<<2;
  for( 
$x 0$x $w4$x++ )
    for( 
$y 0$y $h4$y++ )
      if( 
imagecolorat$img$x$y ) ){
       
$rleft   min$rleft$x );
       
$rright  max$rright$x );
       
$rtop    min$rtop$y );
       
$rbottom max$rbottom$y );
      }
 
// destroy img and serve the result
 
imagedestroy$img );
  return array( 
"left"   => $left $rleft,
               
"top"    => $top  $rtop,
               
"width"  => $rright $rleft 1,
               
"height" => $rbottom $rtop );
}
?>
2010-04-15 14:12:18
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
measure bg image size, wrap text to fit image width

<?php
$mx 
imagesx($main_img);
$my imagesy($main_img);

//TEXT VARS/////////
$main_text = ;
$main_text_size = ;
$main_text_x = ($mx/2);

$main_text_color imagecolorallocate($main_img$main_text_red$main_text_green$main_text_blue);
$words explode(' '$main_text);
$lines = array($words[0]); 
$currentLine 0;
    for(
$i 1$i count($words); $i++)
    {
       
$lineSize imagettfbbox($main_text_size0$mt_f$lines[$currentLine] . ' ' $words[$i]);
        if(
$lineSize[2] - $lineSize[0] < $mx)
        {
           
$lines[$currentLine] .= ' ' $words[$i];
        }
        else
        {
           
$currentLine++;
           
$lines[$currentLine] = $words[$i];
        } 
    }
$line_count 1;
// Loop through the lines and place them on the image
foreach ($lines as $line)
{
   
$line_box imagettfbbox($main_text_size0$mt_f"$line");
   
$line_width $line_box[0]+$line_box[2];
   
$line_height $line_box[1]-$line_box[7];
   
$line_margin = ($mx-$line_width)/2;
   
$line_y = (($line_height+12) * $line_count);
   
imagettftext($main_img$main_t_s0$line_margin$line_y$main_text_color$mt_f$line);

   
// Increment Y so the next line is below the previous line
   
$line_count ++;
}
?>
2010-12-23 01:29:49
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
For mixed text drawing on image, height given by this function is useless and leads to text's hip-hops over the baseline .

I will use just this:
<?php
$size 
12;//font height
$font 'Arial';// your font
$char 'Test';
$char 'With W';
$char 'without w but with p and y and q';

   
$rect imagettfbbox($size0$font$char);

   
$image_height =abs$rect[7] );//do no respect bottom margin
   
$imw $rect[2] - $rect[0]; //as usual
   
$bx abs$rect] ); // X offset 
   
$by $size 1.25// Y offset - we will use const LINEHEIGHT
?>
2011-01-04 17:16:57
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I could in no way reproduce this function's example if I was to use any accented letter.

Replacing imagecreatetruecolor by imagecreate worked correctly with accents.
2011-05-18 09:21:58
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Very CLEAR version of func., with example....

<?php

function calculateTextBox($text,$fontFile,$fontSize,$fontAngle) {
   
/************
    simple function that calculates the *exact* bounding box (single pixel precision). 
    The function returns an associative array with these keys: 
    left, top:  coordinates you will pass to imagettftext 
    width, height: dimension of the image you have to create 
    *************/
   
$rect imagettfbbox($fontSize,$fontAngle,$fontFile,$text);
   
$minX min(array($rect[0],$rect[2],$rect[4],$rect[6]));
   
$maxX max(array($rect[0],$rect[2],$rect[4],$rect[6]));
   
$minY min(array($rect[1],$rect[3],$rect[5],$rect[7]));
   
$maxY max(array($rect[1],$rect[3],$rect[5],$rect[7]));
   
    return array(
     
"left"   => abs($minX) - 1,
     
"top"    => abs($minY) - 1,
     
"width"  => $maxX $minX,
     
"height" => $maxY $minY,
     
"box"    => $rect
   
);
}

// Example usage - gif image output

$text_string    "Hullo World";
$font_ttf        "./fonts/arial.ttf";
$font_size        22;
$text_angle        0;
$text_padding    10// Img padding - around text

$the_box        calculateTextBox($text_string$font_ttf$font_size$text_angle);

$imgWidth    $the_box["width"] + $text_padding;
$imgHeight    $the_box["height"] + $text_padding

$image imagecreate($imgWidth,$imgHeight);
imagefill($imageimagecolorallocate($image,200,200,200));

$color imagecolorallocate($image,0,0,0);
imagettftext($image,
   
$font_size,
   
$text_angle,
   
$the_box["left"] + ($imgWidth 2) - ($the_box["width"] / 2),
   
$the_box["top"] + ($imgHeight 2) - ($the_box["height"] / 2),
   
$color,
   
$font_ttf,
   
$text_string);

header("Content-Type: image/gif");
imagegif($image);
imagedestroy($image);

?>

[ remember: No spaces before or after the <?php ... ?> tag, because of header() call, you Roast! ]
2011-08-30 18:39:42
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
It seems to be worth pointing out that the "points" unit GD2 is using corresponds to 96 dpi, as defined in gd.h:
#define GD_RESOLUTION           96      /* pixels per inch */

So if you want to translate the bbox back to font points, you need to multiply all coordinates by 72/96 = 3/4.
2012-05-04 16:29:00
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Please note that the 3rd argument is really a "path". 
<?php
imagettfbbox
(100'arial.ttf''Hello, World!');  // will result in "Warning: imagettfbbox(): Could not find/open font in ...php on line ..."
?>

use instead something like this:
<?php imagettfbbox(100'./arial.ttf''Hello, World!'); ?>
or
<?php imagettfbbox(100getcwd().'/arial.ttf''Hello, World!'); ?>
2012-06-08 01:50:48
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Automatic line breaks: This simple function is able automatically create line breaks if you want to write a text on an image. All you have to specify is a maximum length.

<?php
function write_multiline_text($image$font_size$color$font$text$start_x$start_y$max_width
{
       
//split the string
        //build new string word for word
        //check everytime you add a word if string still fits
        //otherwise, remove last word, post current string and start fresh on a new line
       
$words explode(" "$text);
       
$string "";
       
$tmp_string "";
       
        for(
$i 0$i count($words); $i++)
        {
           
$tmp_string .= $words[$i]." ";
           
           
//check size of string
           
$dim imagettfbbox($font_size0$font$tmp_string);
           
            if(
$dim[4] < $max_width)
            {
               
$string $tmp_string;
            } else {
               
$i--;
               
$tmp_string "";
               
imagettftext($image110$start_x$start_y$color$font$string);
               
               
$string "";
               
$start_y += 22//change this to adjust line-height. Additionally you could use the information from the "dim" array to automatically figure out how much you have to "move down"
           
}
        }
                               
       
imagettftext($image110$start_x$start_y$color$font$string); //"draws" the rest of the string
?>
2012-07-31 18:02:29
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
It should be noted that the bounding box coordinates returned by this function are inaccurate - bug reports about this have been open for 5 years, so expect this will likely never be fixed. 

More information here:

https://gist.github.com/mindplay-dk/4429153
2013-04-11 16:33:35
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
I found a simple solution that was working for me:

 <?php
   
if(!isset($_GET['size'])) $_GET['size'] = 44;
    if(!isset(
$_GET['text'])) $_GET['text'] = "Hello, world!";

   
$size imagettfbbox($_GET['size'], 0"ARIAL"$_GET['text']);
   
$xsize abs($size[0]) + abs($size[2]);
   
$ysize abs($size[5]) + abs($size[1]);

   
$image imagecreate($xsize$ysize);
   
$blue imagecolorallocate($image00255);
   
$white ImageColorAllocate($image255,255,255);
   
imagettftext($image$_GET['size'], 0abs($size[0]), abs($size[5]), $white"ARIAL"$_GET['text']);

   
header("content-type: image/png");
   
imagepng($image);
   
imagedestroy($image);
?> 

Here is the link with a examples:
http://www.tuxradar.com/practicalphp/11/2/6#null
2015-03-31 18:36:23
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
The returned array order is like this:
-----------------------------
| X:4  Y:5      | X:   Y:7        |
-----------------------------
| X:0  Y:1      | X:2  Y:3       |
-----------------------------

eg:
4 for the upper left X 
5 for the upper left Y and so on.
2015-05-07 15:49:43
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
a little something to replace in blackbart tip :

// start scanning (0=> black => empty) 
  $rleft  = $w4 = $width<<2; 
  $rright = 0; 
  $rbottom   = 0; 
  $rtop = $h4 = $height<<2; 
  for( $x = 0; $x < $w4; $x++ ) 
    for( $y = 0; $y < $h4; $y++ ) 
      if( imagecolorat( $img, $x, $y ) ){ 
        $rleft   = min( $rleft, $x ); 
        $rright  = max( $rright, $x ); 
        $rtop    = min( $rtop, $y ); 
        $rbottom = max( $rbottom, $y ); 
      } 

with

// start scanning (0=> black => empty) 
  $break = false;
  $rleft  = $w4 = $width<<2; 
  $rright = 0; 
  $rbottom   = 0; 
  $rtop = $h4 = $height<<2; 
  // scanning from left to right, breaking when a pixel is found, to scan from the other side : avoid scanning all pixels !
  for($x=0; $x<$w4; $x++){
    for($y=0; $y<$h4; $y++)
      if(imagecolorat($img,$x,$y)){
        $rtop = min($rtop, $y); $rleft = min($rleft, $x);
        $break = true; break;
      }
    if($break) break;
  }
  // scanning from right to left, breaking when a pixel is found
  for($x=($w4-1); $x>$rleft; $x--){
    for($y=0; $y<$h4; $y++)
      if(imagecolorat($img,$x,$y)){
          $rright = max($rright, $x); $rbottom = max($rbottom, $y);
        $break = true; break;
      }
    if($break) break;
  }
//... //

it may be even better to check if the picture is portrait or landscape, to start the loops from left-right(landscape) or top-bottom (portrait)
2016-01-18 19:32:32
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
Автор:
You might save yourself a lot of time and headache if you remember that the bold version of a font is NOT necessarily the same height as the regular version of that font!

(In fact, it can be shorter!)
2016-11-03 18:02:21
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html
I found the bounding boxes a bit tricky to use when trying to rotate AND align text boxes. I wrote this function allows you to set left, right or center aligned text and also rotate it.

<?php
 
/**
   * Renders rotate-able and align-able text of any font or colour
   * 
   * @param resource $img Image resource
   * @param string $text
   * @param int $x
   * @param int $y
   * @param int $fontSize
   * @param string $fontFile Full path to font file
   * @param array $color Red, green, blue values in either int (255) or hex (0xFF)
   * @param string $align Accept 'left', 'right', and defaults to center
   * @return void
   */
 
function gd_text_aligned($img$text$x$y$fontSize$fontFile$color = [000], $align 'left') {

     
// Create colour Resource
     
$textColor imagecolorallocate($img$color[0], $color[1], $color[2]);

     
// Create bounding box co-ordinates
     
$boundingBox imagettfbbox($fontSize$rotation$fontFile$text);
     
$textBox imagettfbbox($fontSize0$fontFile$text);

     
//  Bounding box array key meanings
      //
      //  $bBox[0] = lower left  X
      //  $bBox[1] = lower left  Y
      //  $bBox[2] = lower right X
      //  $bBox[3] = lower right Y
      //  $bBox[4] = upper right X
      //  $bBox[5] = upper right Y
      //  $bBox[6] = upper left  X
      //  $bBox[7] = upper left  Y
      //
      //     6,7     |     4,5
      //        -----+-----
      //     0,1     |     2,3
      //
     
$boundingBoxWidth $boundingBox[4] - $boundingBox[0];
     
$boundingBoxHeight $boundingBox[5] - $boundingBox[1];
     
$flatHeight $textBox[5] - $textBox[1]; 

     
// Align left right or centred?
     
if($align == 'left') {
         
$drawX $x sin($rotation M_PI 180) * ($flatHeight 2);
         
$drawY $y cos($rotation M_PI 180) * ($flatHeight 2);
      } else if(
$align == 'right') {
         
$drawX $x $boundingBoxWidth sin($rotation M_PI 180) * ($flatHeight 2);
         
$drawY $y $boundingBoxHeight cos($rotation M_PI 180) * ($flatHeight 2);
      } else {
         
// no alignment (centred)
         
$drawX $x $boundingBoxWidth 2;
         
$drawY $y $boundingBoxHeight 2;
      }
     
     
// draw text
     
imagettftext(
         
$img,
         
$fontSize,
         
$rotation$drawX$drawY,
         
$textColor$fontFile$text
     
);
     
    }
2017-02-20 09:21:08
http://php5.kiev.ua/manual/ru/function.imagettfbbox.html

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