Imagick::getQuantumRange

(PECL imagick 2.0.0)

Imagick::getQuantumRange — Returns the Imagick quantum range

Description

array Imagick::getQuantumRange ( void )

Returns the quantum range for the Imagick instance.

Return Values

Returns an associative array containing the quantum range as an integer ("quantumRangeLong") and as a string ("quantumRangeString").

Errors/Exceptions

Throws ImagickException on error.

Коментарии

May 03

Автор: holdoffhunger at gmail dot com


The getQuantumRange is a useful function, since many of the ImageMagick functions accept parameters from 0 to a maximum of the Quantum Range.  When getting a return value for this, it doesn't return a string.  It actually returns an array, with one type being a String ('quantumRangeLong') and the other type being a Long Int ('quantumRangeString').  Here's some sample code and the results, given a color, BMP file photograph that is 600x450 pixels...



<?php



            // Author: holdoffhunger@gmail.com

    

        // Imagick Type

        // ---------------------------------------------



    $imagick_type = new Imagick();

    

        // Open File

        // ---------------------------------------------

        

    $file_to_grab = "image_workshop_directory/test.bmp";

    

    $file_handle_for_viewing_image_file = fopen($file_to_grab, 'a+');

    

        // Grab File

        // ---------------------------------------------



    $imagick_type->readImageFile($file_handle_for_viewing_image_file);

    

        // Get Quantum Range

        // ---------------------------------------------

        

    $imagick_type_quantum_range = $imagick_type->getQuantumRange();

    

        // Print Results

        // ---------------------------------------------



    print("<pre>");

    print_r($imagick_type_quantum_range);

    print("</pre>");



?>



Output:



Array

(

    [quantumRangeLong] => 65535

    [quantumRangeString] => 65535

)