fsockopen

(PHP 4, PHP 5)

fsockopenOpen Internet or Unix domain socket connection

Description

resource fsockopen ( string $hostname [, int $port = -1 [, int &$errno [, string &$errstr [, float $timeout = ini_get("default_socket_timeout") ]]]] )

Initiates a socket connection to the resource specified by hostname.

PHP supports targets in the Internet and Unix domains as described in List of Supported Socket Transports. A list of supported transports can also be retrieved using stream_get_transports().

The socket will by default be opened in blocking mode. You can switch it to non-blocking mode by using stream_set_blocking().

The function stream_socket_client() is similar but provides a richer set of options, including non-blocking connection and the ability to provide a stream context.

Parameters

hostname

If OpenSSL support is installed, you may prefix the hostname with either ssl:// or tls:// to use an SSL or TLS client connection over TCP/IP to connect to the remote host.

port

The port number. This can be omitted and skipped with -1 for transports that do not use ports, such as unix://.

errno

If provided, holds the system level error number that occurred in the system-level connect() call.

If the value returned in errno is 0 and the function returned FALSE, it is an indication that the error occurred before the connect() call. This is most likely due to a problem initializing the socket.

errstr

The error message as a string.

timeout

The connection timeout, in seconds.

Note:

If you need to set a timeout for reading/writing data over the socket, use stream_set_timeout(), as the timeout parameter to fsockopen() only applies while connecting the socket.

Return Values

fsockopen() returns a file pointer which may be used together with the other file functions (such as fgets(), fgetss(), fwrite(), fclose(), and feof()). If the call fails, it will return FALSE

Errors/Exceptions

Throws E_WARNING if hostname is not a valid domain.

Changelog

Version Description
4.3.0 Added support for the timeout parameter on win32.
4.3.0 SSL and TLS over TCP/IP support was added.

Examples

Example #1 fsockopen() Example

<?php
$fp 
fsockopen("www.example.com"80$errno$errstr30);
if (!
$fp) {
    echo 
"$errstr ($errno)<br />\n";
} else {
    
$out "GET / HTTP/1.1\r\n";
    
$out .= "Host: www.example.com\r\n";
    
$out .= "Connection: Close\r\n\r\n";
    
fwrite($fp$out);
    while (!
feof($fp)) {
        echo 
fgets($fp128);
    }
    
fclose($fp);
}
?>

Example #2 Using UDP connection

The example below shows how to retrieve the day and time from the UDP service "daytime" (port 13) in your own machine.

<?php
$fp 
fsockopen("udp://127.0.0.1"13$errno$errstr);
if (!
$fp) {
    echo 
"ERROR: $errno - $errstr<br />\n";
} else {
    
fwrite($fp"\n");
    echo 
fread($fp26);
    
fclose($fp);
}
?>

Notes

Note:

Depending on the environment, the Unix domain or the optional connect timeout may not be available.

Warning

UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable. The error will only become apparent when you read or write data to/from the socket. The reason for this is because UDP is a "connectionless" protocol, which means that the operating system does not try to establish a link for the socket until it actually needs to send or receive data.

Note: When specifying a numerical IPv6 address (e.g. fe80::1), you must enclose the IP in square brackets—for example, tcp://[fe80::1]:80.

See Also

Коментарии

Here's how to send an email using SMTP. This includes rudimentary checking on server responses during the process of sending an email. Could be improved by more comprehensive processing of the result codes...or going on to the next mail exchanger when you fail after connecting to the first.

<?php

function another_mail($to,$subject,$headers,$message)
{
 
// Could get this from the php ini?
 
$from="me@example.com";
 list(
$me,$mydomain) = split("@",$from);

 
// Now look up the mail exchangers for the recipient
 
list($user,$domain) = split("@",$to,2);
 if(
getmxrr($domain,$mx,$weight) == 0)  return FALSE;

 
// Try them in order of lowest weight first
 
array_multisort($mx,$weight);
 
$success=0;

 foreach(
$mx as $host) {
 
// Open an SMTP connection
 
$connection fsockopen ($host25$errno$errstr1);
  if (!
$connection)
    continue;
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "220") break;

 
// Introduce ourselves
 
fputs($connection"HELO $mydomain\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// Envelope from
 
fputs($connection"MAIL FROM: $from\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// Envelope to
 
fputs($connection"RCPT TO: $to\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// The message
 
fputs($connection"DATA\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "354") break;

 
// Send To:, From:, Subject:, other headers, blank line, message, and finish
  // with a period on its own line.
 
fputs($connection"To: $to\nFrom: $from\nSubject: $subject\n$headers\n\n$message\n.\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "250") break;

 
// Say bye bye
 
fputs($connection,"QUIT\n");
 
$res=fgets($connection,256);
  if(
substr($res,0,3) != "221") break;

 
// It worked! So break out of the loop which tries all the mail exchangers.
 
$success=1;
  break;
 }
 
// Debug for if we fall over - uncomment as desired
 // print $success?"Mail sent":"Failure: $res\n";
 
if($connection) {
  if(
$success==0fputs($connection"QUIT\n");
 
fclose ($connection);
 }
 return 
$success?TRUE:FALSE;
}

another_mail("recipient@example.com","My Subject","X-mailer: PHP Script\nX-another-header: Whatever","Test email body.\n\nNote if you actually put a period on a line\nby itself, the function will terminate prematurely.\n\nYou will get a partial email sent though.\n");
?>
2002-07-19 08:48:21
http://php5.kiev.ua/manual/ru/function.fsockopen.html
I was tearing my hair out for a week trying to figure out how to do this.

If you use fsockopen with a service that doesn't have an EOF, or you try to read beyond EOF or line break, PHP can hang completely.

In my case, I was trying to write a class that talks to Kali servers (www.kali.net) to get a list of people on the chat server. To keep PHP from hanging due to the above, I discovered this:

<?php
   
class kali_utils {
        function 
games_list($kali_server_ip$kali_server_port) {
           
$result = array();
           
$fp fsockopen($kali_server_ip$kali_server_port$errno$error30);
            if (!
$fp) {
               
$result["errno"] = $errno;
               
$result["error"] = $error;
            }
            else {
               
fputs($fp"KALIQ");
               
$header fread($fp5);
               
$bytes_left socket_get_status($fp);
                if (
$bytes_left 0) {
                   
$result["results"] = fread($fp$bytes_left["unread_bytes"]);
                }
                else {
                   
$result["results"] = "";
                }
               
fclose($fp);
            }
            return 
$result;
        }
    }
?>

When I send the request packet, I get a response packet of length 5. Then I call socket_get_status() and use the unread_bytes key from it to know how far to fread from the socket. Works very good.

I've only used this on PHP 4.2.1 so far.
2002-10-16 22:28:44
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Here is some code to help out abit more with the EOF problem.
I had a problem where I needed to strip out so many lines of server input to get back right data i wanted.

<?php
$port
=4000;
$host="localhost";
$message="test";
$status=senddata($host,$port,$message);
print 
"$status";

function 
senddata($host,$port,$message) {

#takes in account servers that do not return EOF character
#send data to server and get back input

#function globals
$linenumber="2"#amount of lines to get rid of before we give input
$lineamount="1"#amount of lines to read after we give input

$fp fsockopen("$host"$port$errno$errstr30);
if (!
$fp) {
   echo 
"$errstr ($errno)";
}
else {
   for (
$i 1$i $linenumber+1$i++) {
     
fread ($fp,1);
     
$bytes_left socket_get_status($fp);
      if (
$bytes_left 0) { fread($fp$bytes_left[unread_bytes]); }
   }
   
fputs($fp"$message\r\n");
   for (
$i 1$i $lineamount+1$i++) {
     
$status.=fread($fp,1);
     
$bytes_left socket_get_status($fp);
      if (
$bytes_left 0) { $status.=fread($fp$bytes_left[unread_bytes]); }
   }
   
fclose ($fp);
}

return 
$status;
}

?>
2002-12-17 15:38:53
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
Here is how to connect to the web from behind a proxy server:

<?php
/*************start code**************/
/*your proxy server address*/
$proxy "192.168.10.1";
/*your proxy server port*/
$port 8080;
/*the url you want to connect to*/
$url "http://www.php.net/";
$fp fsockopen($proxy$port);
fputs($fp"GET $url HTTP/1.0\r\nHost: $proxy\r\n\r\n");
while(!
feof($fp)){
 
$line fgets($fp4000);
  print(
$line);
}
fclose($fp);
/**************end code**************/
?>
2003-01-30 00:00:08
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Here's a quick function to establish a connection to a web server that will time out if the connection is lost after a user definable amount of time or if the server can't be reached.

Also supports Basic authentication if a username/password is specified. Any improvements or criticisms, please email me! :-)

Returns either a resource ID, an error code or 0 if the server can't be reached at all. Returns -1 in the event that something really wierd happens like a non-standard http response or something. Hope it helps someone.

Cheers,

Ben Blazely

<?php
function connectToURL($addr$port$path$user=""$pass=""$timeout="30")
{
 
$urlHandle fsockopen($addr$port$errno$errstr$timeout);
 if (
$urlHandle)
 {
 
socket_set_timeout($urlHandle$timeout);
  if (
$path)
  {
   
$urlString "GET $path HTTP/1.0\r\nHost: $addr\r\nConnection: Keep-Alive\r\nUser-Agent: MyURLGrabber\r\n";
   if (
$user)
   
$urlString .= "Authorization: Basic ".base64_encode("$user:$pass")."\r\n";
   
$urlString .= "\r\n";

   
fputs($urlHandle$urlString);

   
$response fgets($urlHandle);

    if (
substr_count($response"200 OK") > 0)      // Check the status of the link
   
{
     
$endHeader false;                     // Strip initial header information
     
while ( !$endHeader)
     {
      if (
fgets($urlHandle) == "\r\n")
       
$endHeader true;
     }

     return 
$urlHandle;                      // All OK, return the file handle
   
}
    else if (
strlen($response) < 15)                // Cope with wierd non standard responses
   
{
     
fclose($urlHandle);
     return -
1;
    }
    else                                           
// Cope with a standard error response
   
{
     
fclose($urlHandle);
     return 
substr($response,9,3);
    }
   }

   return 
$urlHandle;
  }
  else
  {
   return 
0;
  }
 }
}
?>
2003-06-08 12:55:23
http://php5.kiev.ua/manual/ru/function.fsockopen.html
To make a telnet connection with a Cisco router:

<?php
$cfgServer 
"nnn.nnn.nnn.nnn"//IP of your router
$cfgPort    23;                //port, 22 if SSH
$cfgTimeOut 10;

$usenet fsockopen($cfgServer$cfgPort$errno$errstr$cfgTimeOut);

if(!
$usenet)
        {
        echo 
"Connexion failed\n";
        exit();
        }
else
        {
        echo 
"Connected\n<BR>";
       
fputs ($usenet"toto\r\n");
       
fputs ($usenet"en\r\n");
       
fputs ($usenet"tutu\r\n");
       
fputs ($usenet"exit\r\n");
        while (!
feof($usenet))
                {
                echo 
". ".fgets($usenet128)."<BR>\n";
                }
        }
?>

Then you will have:
Connected
. ��������
.
. User Access Verification
.
. Password:
. testXB>en
. Password:
. testXB#exit
.
2003-06-25 05:48:00
http://php5.kiev.ua/manual/ru/function.fsockopen.html
thought you guys may appreciate this function, allows you to pass an array of urls to download and does so simultaneously using non-blocking sockets, then returns the data in an array.

<?php
// function connects to an array of URLS at the same time
// and returns an array of results.

function multiHTTP ($urlArr) {
 
$sockets = Array(); // socket array!
 
$urlInfo = Array(); // info arr
 
$retDone = Array();
 
$retData = Array();
 
$errno   = Array();
 
$errstr  = Array();
 for (
$x=0;$x<count($urlArr);$x++) {
 
$urlInfo[$x] = parse_url($urlArr[$x]);
 
$urlInfo[$x][port] = ($urlInfo[$x][port]) ? $urlInfo[$x][port] : 80;
 
$urlInfo[$x][path] = ($urlInfo[$x][path]) ? $urlInfo[$x][path] : "/";
 
$sockets[$x] = fsockopen($urlInfo[$x][host], $urlInfo[$x][port],
                           
$errno[$x], $errstr[$x], 30);
 
socket_set_blocking($sockets[$x],FALSE);
 
$query = ($urlInfo[$x][query]) ? "?" $urlInfo[$x][query] : "";
 
fputs($sockets[$x],"GET " $urlInfo[$x][path] . "$query HTTP/1.0\r\nHost: " .
       
$urlInfo[$x][host] . "\r\n\r\n");
 }
 
// ok read the data from each one
 
$done false;
 while (!
$done) {
  for (
$x=0$x count($urlArr);$x++) {
   if (!
feof($sockets[$x])) {
    if (
$retData[$x]) {
     
$retData[$x] .= fgets($sockets[$x],128);
    } else {
     
$retData[$x] = fgets($sockets[$x],128);
    }
   } else {
   
$retDone[$x] = 1;
   }
  }
 
$done = (array_sum($retDone) == count($urlArr));
 }
 return 
$retData;
}
?>
2003-07-10 05:16:02
http://php5.kiev.ua/manual/ru/function.fsockopen.html
just a quick note for users attempting https and thinking they must resort to curl or alternate methods -
you can use fsockopen, just read the docs closely.  basically they are saying to use 'ssl://' for a HTTPS (SSL) web request.

so this would work for authorize.net, and others; even for that paypal IPN - however I think it would be best to leave the site and deal with paypal's form:

<?php
$host 
"something.example.com";
$port 443;
$path "/the/url/path/file.php"//or .dll, etc. for authnet, etc.

//you will need to setup an array of fields to post with
//then create the post string
$formdata = array ( "x_field" => "somevalue");
//build the post string
 
foreach($formdata AS $key => $val){
   
$poststring .= urlencode($key) . "=" urlencode($val) . "&";
  }
// strip off trailing ampersand
$poststring substr($poststring0, -1);

$fp fsockopen("ssl://".$host$port$errno$errstr$timeout 30);

if(!
$fp){
 
//error tell us
 
echo "$errstr ($errno)\n";
   
}else{

 
//send the server request
 
fputs($fp"POST $path HTTP/1.1\r\n");
 
fputs($fp"Host: $host\r\n");
 
fputs($fp"Content-type: application/x-www-form-urlencoded\r\n");
 
fputs($fp"Content-length: ".strlen($poststring)."\r\n");
 
fputs($fp"Connection: close\r\n\r\n");
 
fputs($fp$poststring "\r\n\r\n");

 
//loop through the response from the server
 
while(!feof($fp)) {
    echo 
fgets($fp4096);
  }
 
//close fp - we are done with it
 
fclose($fp);
}
?>
2003-08-10 05:56:00
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Improved HTTP/1.1 chunked transfer-encoding example.

The sample code given below by Jack does not function correctly when run against a recent version of Apache (I'm assuming that this did once work, but from the HTTP/1.1 spec I can only assume if it did work it was based mostly on luck).

<?php

$header 
"";
$response "";

// connect
if (!($request=fsockopen('example.com',80,$errno,$errstr))) exit($errstr);
else {
   
socket_set_timeout($request,10);
   
// send request
   
fwrite($request,$post);
   
// get header
   
do $header.=fread($request,1); while (!preg_match('/\\r\\n\\r\\n$/',$header));
   
// check for chunked encoding
   
if (preg_match('/Transfer\\-Encoding:\\s+chunked\\r\\n/',$header))
      do {
         
$byte "";
         
$chunk_size="";
         do {
           
$chunk_size.=$byte;
           
$byte=fread($request,1);
         } while (
$byte!="\\r");      // till we match the CR
         
fread($request1);         // also drop off the LF
         
$chunk_size=hexdec($chunk_size); // convert to real number
         
$response.=fread($request,$chunk_size);
         
fread($request,2);          // ditch the CRLF that trails the chunk
     
} while ($chunk_size);         // till we reach the 0 length chunk (end marker)
   
else {
     
// check for specified content length
     
if (preg_match('/Content\\-Length:\\s+([0-9]*)\\r\\n/',$header,$matches)) {
         
$response=fread($request,$matches[1]);
      } else {
         
// not a nice way to do it (may also result in extra CRLF which trails the real content???)
         
while (!feof($request)) $response .= fread($request4096);
      }
   }
   
// close connection
   
fclose($request);
}

// do something useful with the response
print($header);
print(
$response);

?>

Richard.
2003-10-19 11:29:09
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
Try this.
Use AUTH when necessary.
Read RFC 821 when having problems.

<?php

    $handle 
smtp_connect($smtp_server2530111);
    echo 
smtp_command($handle"EHLO $domain\r\n"11);
    echo 
smtp_command($handle"MAIL FROM:<$from_mail>\r\n"11);
    echo 
smtp_command($handle"RCPT TO:<$to_mail>\r\n"11);
    echo 
smtp_command($handle"DATA\r\n"11);
    echo 
smtp_command($handle"$message\r\n.\r\n"11);
   
// don't do it like this - it will hang up
    // echo smtp_command($handle, "$message", 1, 1);
    // echo smtp_command($handle, "\r\n.\r\n", 1, 1);
   
echo smtp_command($handle"QUIT\r\n"11);
   
smtp_close($handle); 
   
   
    function 
smtp_connect($host$port$timeout=30$echo_command=False$echo_response=False$nl2br=False)
    {
       
$errno 0;
       
$errstr 0;
        if(
$echo_command)
        {
            if(
$nl2br) { echo nl2br("CONNECTING TO $host\r\n"); }
            else { echo 
"CONNECTING TO $host\r\n"; }
        }
       
$handle fsockopen($host$port$errno$errstr$timeout);
        if(!
$handle)
        {
            if(
$echo_command)
            {
                if(
$nl2br) { echo nl2br("CONNECTION FAILED\r\n"); }
                else { echo 
"CONNECTION FAILED\r\n"; }
            }
            return 
False;
        }
        if(
$echo_command)
        {
            if(
$nl2br) { echo nl2br("SUCCESS\r\n"); }
            else { echo 
"SUCCESS\r\n"; }
        }
       
$response fgets($handle,1);
       
$bytes_left socket_get_status($handle);
        if (
$bytes_left 0) { $response .= fread($handle$bytes_left["unread_bytes"]); }
        if(
$echo_response)
        {
            if(
$nl2br) { echo nl2br($response); }
            else { echo 
$response; }
        }
        return 
$handle;
    }

    function 
smtp_command($handle$command$echo_command=False$nl2br=False)
    {
        if(
$echo_command)
        {
            if(
$nl2br) { echo nl2br($command); }
            else { echo 
$command; }
        }
       
fputs($handle$command);
       
$response fgets($handle,1);
       
$bytes_left socket_get_status($handle);
        if (
$bytes_left 0) { $response .= fread($handle$bytes_left["unread_bytes"]); }
        if(
$nl2br) { return nl2br($response); }
        else { return 
$response; }
    }
   
    function 
smtp_close($handle)
    {
       
fclose($handle);
    }
?>
2003-10-23 15:30:14
http://php5.kiev.ua/manual/ru/function.fsockopen.html
This is a very fast program for test a form or link (many times).
<?php
$repeat 
100// How many times repeat the test

$timeout 100// Max time for stablish the conection
$size    16;   // Bytes will be read (and display). 0 for read all

$server  '127.0.0.1';            // IP address
$host    'www.example.net';             // Domain name
$target  '/poll/answer.asp';        // Specific program
$referer 'http://www.example.com/';    // Referer
$port    80;

// Setup an array of fields to get with then create the get string
$gets = array ( 'get_field_1' => 'somevalue',
               
'get_field_2' => 'somevalue' );

// Setup an array of fields to post with then create the post string
$posts = array ( 'post_field_1' => 'somevalue',
                 
'post_field_2' => 'somevalue' );

// That's all. Now the program proccess $repeat times

$method "GET";
if ( 
is_array$gets ) ) {
   
$getValues '?';
    foreach( 
$gets AS $name => $value ){
       
$getValues .= urlencode$name ) . "=" urlencode$value ) . '&';
    }
   
$getValues substr$getValues0, -);
} else {
   
$getValues '';
}

if ( 
is_array$posts ) ) {
    foreach( 
$posts AS $name => $value ){
       
$postValues .= urlencode$name ) . "=" urlencode$value ) . '&';
    }
   
$postValues substr$postValues0, -);
   
$method "POST";
} else {
   
$postValues '';
}

$request  "$method $target$getValues HTTP/1.1\r\n";
$request .= "Host: $host\r\n";
$request .= 'User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) ';
$request .= "Gecko/20021204\r\n";
$request .= 'Accept: text/xml,application/xml,application/xhtml+xml,';
$request .= 'text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,';
$request .= "image/jpeg,image/gif;q=0.2,text/css,*/*;q=0.1\r\n";
$request .= "Accept-Language: en-us, en;q=0.50\r\n";
$request .= "Accept-Encoding: gzip, deflate, compress;q=0.9\r\n";
$request .= "Accept-Charset: ISO-8859-1, utf-8;q=0.66, *;q=0.66\r\n";
$request .= "Keep-Alive: 300\r\n";
$request .= "Connection: keep-alive\r\n";
$request .= "Referer: $referer\r\n";
$request .= "Cache-Control: max-age=0\r\n";

if ( 
$method == "POST" ) {
   
$lenght strlen$postValues );
   
$request .= "Content-Type: application/x-www-form-urlencoded\r\n";
   
$request .= "Content-Length: $lenght\r\n";
   
$request .= "\r\n";
   
$request .= $postValues;
}

for ( 
$i 0$i $repeat$i++ ) {
   
$socket  fsockopen$server$port$errno$errstr$timeout );
   
fputs$socket$request );
    if ( 
$size ) {
       
$ret fgets$socket$size );
    } else {
       
$ret '';
        while ( !
feof$socket ) ) {
           
$ret .= fgets$socket4096 );
        }
    }
   
fclose$socket );
    echo 
"<hr> $i -- $content $ret";
}
?>

Alejandro Salamanca
2003-11-18 13:27:50
http://php5.kiev.ua/manual/ru/function.fsockopen.html
<?php
// This script is an example of posting multiple files using 
// fsockopen.
// The tricky part is making sure the HTTP headers and file boundaries are acceptable to the target webserver.
// This script is for example purposes only and could/should be improved upon.

$host='targethost';
$port=80;
$path='/test/socket/file_upload/receive_files.php';

// the file you want to upload 
$file_array[0] = "dingoboy.gif"// the file 
$file_array[1] = "dingoboy2.gif"// the file 
$file_array[2] = "dingoboy3.gif"// the file 
$content_type "image/gif"// the file mime type
//$content_type = "text/plain";
//echo "file_array[0]:$file_array[0]<br><br>";

srand((double)microtime()*1000000);
$boundary "---------------------------".substr(md5(rand(0,32000)),0,10);

$data "--$boundary";

for(
$i=0;$i<count($file_array);$i++){
   
$content_file join(""file($file_array[$i]));

   
$data.="
Content-Disposition: form-data; name=\"file"
.($i+1)."\"; filename=\"$file_array[$i]\"
Content-Type: 
$content_type 

$content_file
--
$boundary";

}

$data.="--\r\n\r\n";

$msg =
"POST $path HTTP/1.0
Content-Type: multipart/form-data; boundary=
$boundary
Content-Length: "
.strlen($data)."\r\n\r\n";

$result="";

// open the connection
$f fsockopen($host$port);

fputs($f,$msg.$data);

// get the response
while (!feof($f)) $result .= fread($f,32000);

fclose($f);

?>
2004-02-13 11:45:00
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
Here is a function for testing a website/URI for availability:

<?php
   
/*
    * @return boolean
    * @param  string $link
    * @desc   ?berpr?ft die angegeben URL auf Erreichbarkeit (HTTP-Code: 200)
    */
   
function url_validate$link )
    {       
       
$url_parts = @parse_url$link );

        if ( empty( 
$url_parts["host"] ) ) return( false );

        if ( !empty( 
$url_parts["path"] ) )
        {
           
$documentpath $url_parts["path"];
        }
        else
        {
           
$documentpath "/";
        }

        if ( !empty( 
$url_parts["query"] ) )
        {
           
$documentpath .= "?" $url_parts["query"];
        }

       
$host $url_parts["host"];
       
$port $url_parts["port"];
       
// Now (HTTP-)GET $documentpath at $host";

       
if (empty( $port ) ) $port "80";
       
$socket = @fsockopen$host$port$errno$errstr30 );
        if (!
$socket)
        {
            return(
false);
        }
        else
        {
           
fwrite ($socket"HEAD ".$documentpath." HTTP/1.0\r\nHost: $host\r\n\r\n");
           
$http_response fgets$socket22 );
           
            if ( 
ereg("200 OK"$http_response$regs ) )
            {
                return(
true);
               
fclose$socket );
            } else
            {
//                echo "HTTP-Response: $http_response<br>";
               
return(false);
            }
        }
    }
?>
2004-02-16 16:05:45
http://php5.kiev.ua/manual/ru/function.fsockopen.html
The following snippet allows you to retrieve the title of a page.

Great for rewriting auto-url detectors to display the actual title rather then http://...

<?php
echo get_url_title("http://www.php.net/cal.php?id=409");

function 
get_url_title($url$timeout 2)
{
   
$url parse_url($url);

    if(!
in_array($url['scheme'],array('','http')))
        return;

   
$fp fsockopen ($url['host'], ($url['port'] > $url['port'] : 80), $errno$errstr$timeout);
    if (!
$fp)
    {
        return;
       
// echo "$errstr ($errno)<br>\n";
   
}
    else
    {
       
fputs ($fp"GET /".$url['path'].($url['query'] ? '?'.$url['query'] : '')." HTTP/1.0\r\nHost: ".$url['host']."\r\n\r\n");
       
$d '';
        while (!
feof($fp))
        {
           
$d .= fgets ($fp,2048);

            if(
preg_match('~(</head>|<body>|(<title>\s*(.*?)\s*</title>))~i'$d$m))
                break;
        }
       
fclose ($fp);

        return 
$m[3];
    }
}
?>
2004-10-25 07:42:00
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Here's a function to just fetch the contents behind an URL.

<?php
function fetchURL$url ) {
   
$url_parsed parse_url($url);
   
$host $url_parsed["host"];
   
$port $url_parsed["port"];
    if (
$port==0)
       
$port 80;
   
$path $url_parsed["path"];
    if (
$url_parsed["query"] != "")
       
$path .= "?".$url_parsed["query"];

   
$out "GET $path HTTP/1.0\r\nHost: $host\r\n\r\n";

   
$fp fsockopen($host$port$errno$errstr30);

   
fwrite($fp$out);
   
$body false;
    while (!
feof($fp)) {
       
$s fgets($fp1024);
        if ( 
$body )
           
$in .= $s;
        if ( 
$s == "\r\n" )
           
$body true;
    }
   
   
fclose($fp);
   
    return 
$in;
}
?>
2004-12-02 07:50:54
http://php5.kiev.ua/manual/ru/function.fsockopen.html
The documentation example is of a GET request. I have found POST documentation to be lacking, and here's a function to easily simulate submitting form data:

<?php
# $host includes host and path and filename
    # ex: "myserver.com/this/is/path/to/file.php"
# $query is the POST query data
    # ex: "a=thisstring&number=46&string=thatstring
# $others is any extra headers you want to send
    # ex: "Accept-Encoding: compress, gzip\r\n"
function post($host,$query,$others=''){
   
$path=explode('/',$host);
   
$host=$path[0];
    unset(
$path[0]);
   
$path='/'.(implode('/',$path));
   
$post="POST $path HTTP/1.1\r\nHost: $host\r\nContent-type: application/x-www-form-urlencoded\r\n${others}User-Agent: Mozilla 4.0\r\nContent-length: ".strlen($query)."\r\nConnection: close\r\n\r\n$query";
   
$h=fsockopen($host,80);
   
fwrite($h,$post);
    for(
$a=0,$r='';!$a;){
       
$b=fread($h,8192);
       
$r.=$b;
       
$a=(($b=='')?1:0);
    }
   
fclose($h);
    return 
$r;
}
?>
2005-02-12 15:34:20
http://php5.kiev.ua/manual/ru/function.fsockopen.html
If you are using fsockopen to access webpage, but come across a redirect (Location: ) in the header and want to find and follow the redirect as in this snippet:

<?php
while (!feof($fp)) {
   
$line=fgets($fp1024);               
   if (
stristr($line,"location:")!="") {
   
$redirect=preg_replace("/location:/i","",$line);
   }
}
?>

Then don't forget to <?php $redirect trim($redirect); ?> before trying to follow this new link as $redirect actually has a \r\n on the end of it and won't give you a valid path in the next iteration otherwise. A six hour bug.

Saul Dobney
2005-04-19 11:40:50
http://php5.kiev.ua/manual/ru/function.fsockopen.html
<?php
/************************************************************
* Author: Richard Lajaunie
* Mail : richard.lajaunie@cote-azur.cci.fr
*
* subject : this script retreive all mac-addresses on all ports
* of a Cisco 3548 Switch by a telnet connection
*
* base on the script by: xbensemhoun at t-systems dot fr
**************************************************************/

if ( array_key_exists(1$argv) ){
   
$cfgServer $argv[1];
}else{
   echo 
"ex: 'php test.php 10.0.0.0' \n";
   exit;
}

$cfgPort    23;                //port, 22 if SSH
$cfgTimeOut 10;

$usenet fsockopen($cfgServer$cfgPort$errno$errstr), $cfgTimeOut);

if(!
$usenet){
       echo 
"Connexion failed\n";
       exit();
}else{
       echo 
"Connected\n";
       
fputs ($usenet"password\r\n");
       
fputs ($usenet"en\r\n");
       
fputs ($usenet"password\r\n");
       
fputs ($usenet"sh mac-address-table\r\n");
       
fputs ($usenet" "); // this space bar is this for long output
     
       // this skip non essential text
       
$j 0;
       while (
$j<16){
       
fgets($usenet128);
       
$j++;
       }
   
stream_set_timeout($usenet2); // set the timeout for the fgets
   
$j 0;
       while (!
feof($usenet)){
       
$ret fgets($usenet128);
       
$ret str_replace("\r"''$ret);
       
$ret str_replace("\n"""$ret);
       if  (
ereg("FastEthernet"$ret)){
           echo 
"$ret \n";
       }
       if (
ereg('--More--'$ret) ){
           
fputs ($usenet" "); // for following page
       
}
       
$info stream_get_meta_data($usenet);
       if (
$info['timed_out']) {
           
$j++;
       }
       if (
$j >2){
           
fputs ($usenet"lo");
           break;
       }
   }
}
echo 
"End.\r\n";
?>
2005-05-19 03:10:08
http://php5.kiev.ua/manual/ru/function.fsockopen.html
I have found, when using fsockopen() and the POST method, that using HTTP/1.1 is VERY significantly slower than HTTP/1.0 (at least for the server I'm querying, an Orion-based server). Also, using cURL tended to be faster than fsockopen(), though only slightly. For example, here was a recent set of data (for the same exact request in each case):

cURL: 4.2sec
fsockopen() HTTP/1.0: 4.9sec
fsockopen() HTTP/1.1: 19.9sec (!)

I'm not sure why this was occurring. Perhaps it has something to do with the Orion server, which I have little experience with. However, it was not a fluke, and I double-checked the code to make sure there were no errors.

EDITORS NOTE: HTTP/1.1 uses persistent connection causing this delay. Use "Connection: close" header to disable it.
2005-08-21 18:38:48
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
Additional ICQ status request over proxy
<?php
function icq_uin($uin)
{
    if (! 
is_numeric($uin))
        return 
false;
   
$proxy_name 'proxy.mydomain.de';
   
$proxy_port 8080;
   
$proxy_user "";
   
$proxy_pass "";
   
$proxy_cont '';
   
$request_url "http://status.icq.com/online.gif?icq=$uin";

   
$proxy_fp fsockopen($proxy_name$proxy_port);
    if (!
$proxy_fp)
        return 
false;
   
fputs($proxy_fp"GET $request_url HTTP/1.0\r\nHost: $proxy_name\r\n");
   
fputs($proxy_fp"Proxy-Authorization: Basic "base64_encode ("$proxy_user:$proxy_pass")."\r\n\r\n");
    while(!
feof($proxy_fp)){
       
$proxy_cont .= fread($proxy_fp,4096);
    }
   
fclose($proxy_fp);
   
$proxy_cont substr($proxy_contstrpos($proxy_cont,"\r\n\r\n")+4);
    if (
strstr($proxy_cont'online1'))
        return 
'online';
    if (
strstr($proxy_cont'online0'))
        return 
'offline';
    if (
strstr($proxy_cont'online2'))
        return 
'disabled';
}
echo 
"User is ".icq_uin(123456789012345);
?>

Thanx

[EDIT BY danbrown AT php DOT net: Based on code provided in a note by (rafaelbc AT matrix DOT com DOT br) on 23-MAY-09, which has since been removed.]
2005-10-27 03:20:37
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
Lots of tries and lots of reading http-headers...

If you want to post $_POST vars and (in this case) one file named userfile to $remote_server and $remote_url.

<?php
       
// get the necessary data
       
$file_name $_FILES['userfile']['name'];     // the file
       
$tmp_name $_FILES['userfile']['tmp_name'];     // the file
       
$content_type $_FILES['userfile']['type'];     // the file mime type
       
       
srand((double)microtime()*1000000);
       
$boundary "---------------------".substr(md5(rand(0,32000)),0,10);
       
       
// Build the header
       
$header "POST $remote_url HTTP/1.0\r\n";
       
$header .= "Host: $remote_server\r\n";
       
$header .= "Content-type: multipart/form-data, boundary=$boundary\r\n";
       
// attach post vars
       
foreach($_POST AS $index => $value){
           
$data .="--$boundary\r\n";
           
$data .= "Content-Disposition: form-data; name=\"".$index."\"\r\n";
           
$data .= "\r\n".$value."\r\n";
           
$data .="--$boundary\r\n";
        }
       
// and attach the file
       
$data .= "--$boundary\r\n";
       
$content_file join(""file($tmp_name));
       
$data .="Content-Disposition: form-data; name=\"userfile\"; filename=\"$file_name\"\r\n";
       
$data .= "Content-Type: $content_type\r\n\r\n";
       
$data .= "".$content_file."\r\n";
       
$data .="--$boundary--\r\n";
       
$header .= "Content-length: " strlen($data) . "\r\n\r\n";
                 
// Open the connection
       
$fp fsockopen($remote_server80);
       
// then just 
       
fputs($fp$header.$data);
       
fclose($fp);
?>
2006-02-27 07:13:08
http://php5.kiev.ua/manual/ru/function.fsockopen.html
The following function performs pop3 authentication. Returns NULL on error, or true/false to indicate username/password matching:

$address is the hostname of the server and $ssl is a boolean that indicates whether an SSL connection is requested.

<?php
function pop3authCheck($username$password$address$ssl)
{
    if (
$ssl)
       
$uri="ssl://$address:995";
    else
       
$uri="tcp://$address:110";

   
$fp=fsockopen($uri);

    if (!
$fp)
        return(
NULL);

   
$st=fgets($fp512);
    if (
substr($st03)!="+OK")
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st="USER $username\n";
    if (
fwrite($fp$st)!=strlen($st))
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st=fgets($fp512);
    if (
substr($st03)!="+OK")
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st="PASS $password\n";
    if (
fwrite($fp$st)!=strlen($st))
    {
       
fclose($fp);
        return(
NULL);
    }

   
$st=fgets($fp512);
   
fclose($fp);
    if (
substr($st03)=="+OK")
        return(
true);
    else if (
substr($st04)=="+ERR")
        return(
false);
    else
        return(
NULL);
}
?>
2007-01-24 17:01:38
http://php5.kiev.ua/manual/ru/function.fsockopen.html
This script checks specific ports so you need to have the correct port open on the server for this to work.

E.g if i have a windows domain controller and it is servering LDAP then the following would be used to check it is online:
<?php
chkServer
("MyDC""389");
?>

for a webserver:
<?php
chkServer
("MyWebSvr""80");
?>

etc etc
--------------------------------------------------------

<?php
// check if a server is up by connecting to a port
function chkServer($host$port)
{   
   
$hostip = @gethostbyname($host); // resloves IP from Hostname returns hostname on failure
   
   
if ($hostip == $host// if the IP is not resloved
   
{
        echo 
"Server is down or does not exist";
    }
    else
    {
        if (!
$x = @fsockopen($hostip$port$errno$errstr5)) // attempt to connect
       
{
            echo 
"Server is down";
        }
        else 
        {
            echo 
"Server is up";
            if (
$x)
            {
                @
fclose($x); //close connection
           
}
        } 
    }
}
?>
2007-01-29 09:52:10
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
To check if a Url is Online (with http and https)
Using @fgets to hide Warning when using SSL
(Bug: "Warning: function.fgets SSL: fatal protocol error", http://bugs.php.net/bug.php?id=23220)

<?php

   
function isOnline($url) {
        if (!
$url_info parse_url($url)) {
            return 
false;   
        }
       
        switch (
$url_info['scheme']) {
            case 
'https':
               
$scheme 'ssl://';
               
$port 443;
                break;
            case 
'http':
            default:
               
$scheme '';
               
$port 80;   
        }
       
       
$data "";
       
$fid = @fsockopen($scheme $url_info['host'], $port$errno$errstr30);
        if (
$fid) {
           
fputs($fid'HEAD ' . (isset($url_info['path'])? $url_info['path']: '/') . (isset($url_info['query'])? '?' $url_info['query']: '') . " HTTP/1.0\r\n" 
                       
"Connection: close\r\n" 
                       
'Host: ' $url_info['host'] . "\r\n\r\n");   
            while (!
feof($fid)) {
               
$data .= @fgets($fid128);
            }
           
fclose($fid);
            return !empty(
$data);
        } else {
            return 
false;
        }
    } 

?>
2007-05-26 10:29:17
http://php5.kiev.ua/manual/ru/function.fsockopen.html
I was having trouble doing an https in fopen and with fsockopen where the address had ssl://.  I was getting error code 114 in the log.  After much research i found that there was some ssl conflict trouble with MySQL 5.0.20-5.0.33.  It had some functions that were interfering with openssl that showed up in the php install.

http://bugs.mysql.com/bug.php?id=21930
http://bugs.mysql.com/bug.php?id=19289
2007-07-23 12:32:08
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
The DEFAULT stream timeout is set according to default_socket_timeout in your php.ini file.  Took forever for me to dig that up....
2007-09-04 21:34:49
http://php5.kiev.ua/manual/ru/function.fsockopen.html
<?php
// Check for new version
   
$current_version explode('.''1.0.00');
   
$minor_revision = (int) $current_version[2];

   
$errno 0;
   
$errstr $version_info '';

    if (
$fsock fsockopen("www.exanmple.eu"80$errno$errstr30))
    {
        @
fputs($fsock"GET /ver.txt HTTP/1.1\r\n");
        @
fputs($fsock"HOST: www.example.eu\r\n");
        @
fputs($fsock"Connection: close\r\n\r\n");

       
$get_info false;
        while (!@
feof($fsock))
        {
            if (
$get_info)
            {
               
$version_info .= @fread($fsock1024);
            }
            else
            {
                if (@
fgets($fsock1024) == "\r\n")
                {
                   
$get_info true;
                }
            }
        }
        @
fclose($fsock);

       
$version_info explode("\n"$version_info);
       
$latest_head_revision = (int) $version_info[0];
       
$latest_minor_revision = (int) $version_info[2];
       
$latest_version = (int) $version_info[0] . '.' . (int) $version_info[1] . '.' . (int) $version_info[2];

        if (
$latest_head_revision == && $minor_revision == $latest_minor_revision)
        {
           
$version_info '<p style="color:green">OK</p>';
        }
        else
        {
           
$version_info '<p style="color:red">neaktualne';
           
$version_info .= '<br />'Latest_version_info' . $latest_version) . ' ' . sprintf(Current_version_info''1.0.00') . '</p>';
        }
    }
    else
    {
        if (
$errstr)
        {
           
$version_info '<p style="color:red">' sprintf(Connect_socket_error) . '</p>';
        }
        else
        {
           
$version_info '<p>'Socket_functions_disabled'</p>';
        }
    }
   
   
$version_info .= '<p>'Mailing_list_subscribe_reminder'</p>';

echo 
$version_info;
?>
2007-12-27 11:12:20
http://php5.kiev.ua/manual/ru/function.fsockopen.html
If you have to use a proxy to make requests outside of your local network, you may use this class:

<?php
/*
 * 
 * No Proxy Authentification Implemented; PHP 5
 * 
 */

class RemoteFopenViaProxy {

    private 
$result;
    private 
$proxy_name;
    private 
$proxy_port;
    private 
$request_url;

    public function 
get_proxy_name() {
        return 
$this->proxy_name;
    }

    public function 
set_proxy_name($n) {
       
$this->proxy_name $n;
    }

    public function 
get_proxy_port() {
        return 
$this->proxy_port;
    }

    public function 
set_proxy_port($p) {
       
$this->proxy_port $p;
    }

    public function 
get_request_url() {
        return 
$this->request_url;
    }

    public function 
set_request_url($u) {
       
$this->request_url $u;
    }

    public function 
get_result() {
        return 
$this->result;
    }

    public function 
set_result($r) {
       
$this->result $r;
    }

    private function 
get_url_via_proxy() {

       
$proxy_fp fsockopen($this->get_proxy_name(), $this->get_proxy_port());

        if (!
$proxy_fp) {
            return 
false;
        }
       
fputs($proxy_fp"GET " $this->get_request_url() . " HTTP/1.0\r\nHost: " $this->get_proxy_name() . "\r\n\r\n");
        while (!
feof($proxy_fp)) {
           
$proxy_cont .= fread($proxy_fp4096);
        }
       
fclose($proxy_fp);
       
$proxy_cont substr($proxy_contstrpos($proxy_cont"\r\n\r\n") + 4);
        return 
$proxy_cont;

    }

    private function 
get_url($url) {
       
$fd = @ file($url);
        if (
$fd) {
            return 
$fd;
        } else {
            return 
false;
        }
    }

    private function 
logger($line$file) {
       
$fd fopen($file ".log""a+");
       
fwrite($fddate("Ymd G:i:s") . " - " $file " - " $line "\n");
       
fclose($fd);
    }

    function 
__construct($url$proxy_name ""$proxy_port "") {

       
$this->set_request_url($url);
       
$this->set_proxy_name($proxy_name);
       
$this->set_proxy_port($proxy_port);

    }

    public function 
request_via_proxy() {

       
$this->set_result($this->get_url_via_proxy());
        if (!
$this->get_result()) {
           
$this->logger("FAILED: get_url_via_proxy(" $this->get_proxy_name() . "," $this->get_proxy_port() . "," $this->get_request_url() . ")""RemoteFopenViaProxyClass.log");
        }
    }

    public function 
request_without_proxy() {

       
$this->set_result($this->get_url($this->get_request_url()));
        if (!
$this->get_result()) {
           
$this->logger("FAILED: get_url(" $url ")""RemoteFopenViaProxyClass.log");
        }
    }
}
?>

Use it this way:

<?php
// call constructor
$obj = new RemoteFopenViaProxy($insert_request_url$insert_proxy_name$insert_proxy_port);
// change settings after object generation
$obj->set_proxy_name($insert_proxy_name);
$obj->set_proxy_port($insert_proxy_port);
$obj->set_request_url($insert_request_url);
$obj->request_via_proxy();
echo 
$obj->get_result();
?>

If there are errors during execution, the script tries to write some useful information into a log file.
2008-04-17 09:21:39
http://php5.kiev.ua/manual/ru/function.fsockopen.html
My $0.02 on handling chunked transfer encoded output...  Has rudimentary error handling.

<?php
//
// Example usage...
//
$server  '127.0.0.1';
$port    '80';
$uri     '/cgi-bin/random-cgi';
$content 'Your post content...';

$post_results httpPost($server,$port,$uri,$content);
if (!
is_string($post_results)) {
    die(
'uh oh, something went wrong');
    } else {
    die(
'Here are your results: ' $post_results);
    }

//
// Post provided content to an http server and optionally
// convert chunk encoded results.  Returns false on errors,
// result of post on success.  This example only handles http,
// not https.
//
function httpPost($ip=null,$port=80,$uri=null,$content=null) {
    if (empty(
$ip))         { return false; }
    if (!
is_numeric($port)) { return false; }
    if (empty(
$uri))        { return false; }
    if (empty(
$content))    { return false; }
   
// generate headers in array.
   
$t   = array();
   
$t[] = 'POST ' $uri ' HTTP/1.1';
   
$t[] = 'Content-Type: text/html';
   
$t[] = 'Host: ' $ip ':' $port;
   
$t[] = 'Content-Length: ' strlen($content);
   
$t[] = 'Connection: close';
   
$t   implode("\r\n",$t) . "\r\n\r\n" $content;
   
//
    // Open socket, provide error report vars and timeout of 10
    // seconds.
    //
   
$fp  = @fsockopen($ip,$port,$errno,$errstr,10);
   
// If we don't have a stream resource, abort.
   
if (!(get_resource_type($fp) == 'stream')) { return false; }
   
//
    // Send headers and content.
    //
   
if (!fwrite($fp,$t)) {
       
fclose($fp);
        return 
false;
        }
   
//
    // Read all of response into $rsp and close the socket.
    //
   
$rsp '';
    while(!
feof($fp)) { $rsp .= fgets($fp,8192); }
   
fclose($fp);
   
//
    // Call parseHttpResponse() to return the results.
    //
   
return parseHttpResponse($rsp);
    }

//
// Accepts provided http content, checks for a valid http response,
// unchunks if needed, returns http content without headers on
// success, false on any errors.
//
function parseHttpResponse($content=null) {
    if (empty(
$content)) { return false; }
   
// split into array, headers and content.
   
$hunks explode("\r\n\r\n",trim($content));
    if (!
is_array($hunks) or count($hunks) < 2) {
        return 
false;
        }
   
$header  $hunks[count($hunks) - 2];
   
$body    $hunks[count($hunks) - 1];
   
$headers explode("\n",$header);
    unset(
$hunks);
    unset(
$header);
    if (!
verifyHttpResponse($headers)) { return false; }
    if (
in_array('Transfer-Encoding: chunked',$headers)) {
        return 
trim(unchunkHttpResponse($body));
        } else {
        return 
trim($body);
        }
    }

//
// Validate http responses by checking header.  Expects array of
// headers as argument.  Returns boolean.
//
function validateHttpResponse($headers=null) {
    if (!
is_array($headers) or count($headers) < 1) { return false; }
    switch(
trim(strtolower($headers[0]))) {
        case 
'http/1.0 100 ok':
        case 
'http/1.0 200 ok':
        case 
'http/1.1 100 ok':
        case 
'http/1.1 200 ok':
            return 
true;
        break;
        }
    return 
false;
    }

//
// Unchunk http content.  Returns unchunked content on success,
// false on any errors...  Borrows from code posted above by
// jbr at ya-right dot com.
//
function unchunkHttpResponse($str=null) {
    if (!
is_string($str) or strlen($str) < 1) { return false; }
   
$eol "\r\n";
   
$add strlen($eol);
   
$tmp $str;
   
$str '';
    do {
       
$tmp ltrim($tmp);
       
$pos strpos($tmp$eol);
        if (
$pos === false) { return false; }
       
$len hexdec(substr($tmp,0,$pos));
        if (!
is_numeric($len) or $len 0) { return false; }
       
$str .= substr($tmp, ($pos $add), $len);
       
$tmp  substr($tmp, ($len $pos $add));
       
$check trim($tmp);
        } while(!empty(
$check));
    unset(
$tmp);
    return 
$str;
    }

?>
2008-09-06 12:00:09
http://php5.kiev.ua/manual/ru/function.fsockopen.html
When downloading large files, it is not really efficient to put the whole server answer in memory before parsing the data to remove the header parts. Here is a simple way to do it while writing the data as it arrive:

<?php

// $socket is a valid fsockopen handle

$out '';
$headerendfound false;
$fp fopen($fileTarget'w');
$buffer '';
while (!
feof($socket)) {
   
$out fgets ($socket,16384);
    if (
$headerendfound) {
       
fwrite($fp$out);
        print 
'.';
    }
    if (!
$headerendfound) {
       
$buffer .= $out;
        print 
"searching for header\n";
       
$headerend strpos($buffer"\r\n\r\n");
        if (
$headerend !== false) {
           
$headerendfound true;
           
fwrite($fpsubstr($buffer$headerend+4));
           
$buffer '';
        }
    }

fclose($fp);
fclose($socket);

?>
2009-06-21 06:17:02
http://php5.kiev.ua/manual/ru/function.fsockopen.html
note:
the default protocol - if not given - seems to be tcp://
2009-06-22 08:20:59
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
For some reason the default FreeBSD 7.0 port (jailed environment) breaks fsockopen() on SSL URLs, returning a constant stream of nothing!  In my case this resulted in php-cgi bringing down lighttpd completely, in rapid time!  Avoid FreeBSD/jails/fsockopen + SSL.  Use curl_init() instead.
2009-07-30 11:05:24
http://php5.kiev.ua/manual/ru/function.fsockopen.html
A simple proxy list checker. You can check a list ip:port if that port is opened on that IP.

<?php

$fisier 
file_get_contents('proxy_list.txt'); // Read the file with the proxy list
$linii explode("\n"$fisier); // Get each proxy
$fisier fopen("bune.txt""a"); // Here we will write the good ones

for($i 0$i count($linii) - 1$i++) test($linii[$i]); // Test each proxy

function test($proxy)
{
  global 
$fisier;
 
$splited explode(':',$proxy); // Separate IP and port
 
if($con = @fsockopen($splited[0], $splited[1], $eroare$eroare_str3)) 
  {
   
fwrite($fisier$proxy "\n"); // Check if we can connect to that IP and port
   
print $proxy '<br>'// Show the proxy
   
fclose($con); // Close the socket handle
 
}
}

fclose($fisier); // Close the file

?>
2010-01-12 04:26:33
http://php5.kiev.ua/manual/ru/function.fsockopen.html
<?php
/*
this script i used for remote my PvPGN Server, to check email user.
not good, but it work.
*/

set_time_limit(0); 
$host   'host';
$port   'port';
$user   'user';
$pass   'pass';
$socket fsockopen($host$port) or die('Could not connect to: '.$host);
$userdota "palma";
if(
$socket

   
sendcmd("\r",$socket);
   
$status "open"// set status open
       
   
while($status=="open"//while we are connected to the server 
     
{     
             
$line = @fgets($socket1024) ;
             
/////////////login////////////////   
           
if (strstr($line"there is no guest account"))
              {
                 
sendcmd($user."\r\n",$socket);
                 
sendcmd($pass."\r\n",$socket);
              }   
           
//////////////send command ////////////////////
           
if (strstr($line,"Your unique name: ".$user))
              { 
sendcmd("/finger ".$userdota."\r\n",$socket);
              }
           
           
//////////////get email////////////////////
           
if (strstr($line,"email:")) // if respone server write "email:"
             

                 
$pattern '/email:(.*) ,/';
                 
preg_match($pattern$line$matches);
                 
fclose($socket); 
                 
$status="close"// status close
                 
$matches=str_replace(" ",""$matches);
                 
$matches=str_replace(",is_operator:0,is_admin:0,",""$matches);
                 
$matches=str_replace("email:",""$matches);
                 print 
$matches[0];                 
                 
$email=$matches[0];
              }
            if (
strstr($line,"ERROR: Invalid user.")) // if respone server write "ERROR: Invalid user."
             

                 
                 
fclose($socket); 
                 
$status="close";
                 
$error ="Invalid User";    // error message
             
}
           
           
////////////login failed //////////////////////////             
           
if (strstr($line"Login failed")) // if respone server write "Login failed"
             
{
                 
$error "Login Failed";    // error message
                 
fclose($socket); 
                 
$status="close";
              }
           
           
flush(); // close
     
     
}
         
}
function 
sendcmd($cmd,$socket// send command function
{
 
fputs($socket$cmdstrlen($cmd)); 
}
?>
2010-08-30 23:56:39
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
Here is my fsockopen-based HTTP request fonction (GET and POST) :

<?php
function http_request(
   
$verb 'GET',             /* HTTP Request Method (GET and POST supported) */
   
$ip,                       /* Target IP/Hostname */
   
$port 80,                /* Target TCP port */
   
$uri '/',                /* Target URI */
   
$getdata = array(),        /* HTTP GET Data ie. array('var1' => 'val1', 'var2' => 'val2') */
   
$postdata = array(),       /* HTTP POST Data ie. array('var1' => 'val1', 'var2' => 'val2') */
   
$cookie = array(),         /* HTTP Cookie Data ie. array('var1' => 'val1', 'var2' => 'val2') */
   
$custom_headers = array(), /* Custom HTTP headers ie. array('Referer: http://localhost/ */
   
$timeout 1,           /* Socket timeout in seconds */
   
$req_hdr false,          /* Include HTTP request headers */
   
$res_hdr false           /* Include HTTP response headers */
   
)
{
   
$ret '';
   
$verb strtoupper($verb);
   
$cookie_str '';
   
$getdata_str count($getdata) ? '?' '';
   
$postdata_str '';

    foreach (
$getdata as $k => $v)
               
$getdata_str .= urlencode($k) .'='urlencode($v) . '&';

    foreach (
$postdata as $k => $v)
       
$postdata_str .= urlencode($k) .'='urlencode($v) .'&';

    foreach (
$cookie as $k => $v)
       
$cookie_str .= urlencode($k) .'='urlencode($v) .'; ';

   
$crlf "\r\n";
   
$req $verb .' '$uri $getdata_str .' HTTP/1.1' $crlf;
   
$req .= 'Host: '$ip $crlf;
   
$req .= 'User-Agent: Mozilla/5.0 Firefox/3.6.12' $crlf;
   
$req .= 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' $crlf;
   
$req .= 'Accept-Language: en-us,en;q=0.5' $crlf;
   
$req .= 'Accept-Encoding: deflate' $crlf;
   
$req .= 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7' $crlf;
   
    foreach (
$custom_headers as $k => $v)
       
$req .= $k .': '$v $crlf;
       
    if (!empty(
$cookie_str))
       
$req .= 'Cookie: 'substr($cookie_str0, -2) . $crlf;
       
    if (
$verb == 'POST' && !empty($postdata_str))
    {
       
$postdata_str substr($postdata_str0, -1);
       
$req .= 'Content-Type: application/x-www-form-urlencoded' $crlf;
       
$req .= 'Content-Length: 'strlen($postdata_str) . $crlf $crlf;
       
$req .= $postdata_str;
    }
    else 
$req .= $crlf;
   
    if (
$req_hdr)
       
$ret .= $req;
   
    if ((
$fp = @fsockopen($ip$port$errno$errstr)) == false)
        return 
"Error $errno$errstr\n";
   
   
stream_set_timeout($fp0$timeout 1000);
   
   
fputs($fp$req);
    while (
$line fgets($fp)) $ret .= $line;
   
fclose($fp);
   
    if (!
$res_hdr)
       
$ret substr($retstrpos($ret"\r\n\r\n") + 4);
   
    return 
$ret;
}
?>

Example usages :

<?php
echo http_request('GET''www.php.net');
echo 
http_request('GET''www.php.net'80'/manual/en/function.phpinfo.php');
echo 
http_request('GET''www.php.net'80'/manual/en/function.phpinfo.php', array('get1' => 'v_get1'), array(), array('cookie1' => 'v_cookie1'), array('X-My-Header' => 'My Value'));
?>

[EDIT BY danbrown AT php DOT net: Contains a bugfix provided by "Wrinkled Cheese" on 24-JUN-2011 to fix the $getdata foreach() loop; another bugfix provided by Suat Secmen on 12-JAN-2012 to fix a $timeout = 1000, then stream_set_timeout($fp, 0, $timeout * 1000), equaling 1,000 seconds.]
2011-01-14 18:24:40
http://php5.kiev.ua/manual/ru/function.fsockopen.html
My recursive unchunk function:

<?php
function unchunk($result)
         {return 
preg_replace('/([0-9A-F]+)\r\n(.*)/sie',
                             
'($cnt=@base_convert("\1", 16, 10))
                               ?substr(($str=@strtr(\'\2\', array(\'\"\'=>\'"\', \'\\\\0\'=>"\x00"))), 0, $cnt).unchunk(substr($str, $cnt+2))
                               :""
                              '
,
                             
$result
                             
);
         }
?>
2011-12-28 22:15:39
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Did you know that fsockopen() DOES NOT validate SSL certificates whatsoever? For the sake of World's overall security level, I guess it would be a very positive idea to add a BIG WARNING notice on the manual page!

Citing the extensive study  titled "The Most Dangerous Code in the World: Validating SSL Certificates in Non-Browser Software" published in 2012 (google it if they removed the link) on page 5:

"PHP provides several methods for establishing SSL connections. For example, fsockopen, which opens a raw socket to the remote server, can be used to connect to SSL servers by putting “ssl://” in the URL. Even though fsockopen does not perform any certificate checks whatsoever, PHP application developers routinely use it for SSL connection establishment (see Section 9)."

For proper certificate validation with some level of ease, you can always move to cURL, but be careful:

"PHP also provides a cURL binding, which uses cURL’s default settings to establish SSL connections with proper certificate validation. As we show in Sections 7.1, 7.2, and 7.3, application developers often set cURL options incorrectly, overriding the defaults and breaking certificate validation."

For more detailed insights, try out the following code:
<?php readfile("http".str_replace('+''.'implode('/', array(":"null"www+cs+utexas+edu""~shmat""shmat_ccs12.pdf")))); ?>
2014-03-19 06:29:25
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
It appears that in PHP 5.6.0 (at least the version in Debian jessie, with openssl 1.0.1h-3), this function *is* now validating SSL certificates (in a variety of ways). First, it appears to fail for untrusted certificates (i.e. no matching CA trusted locally), and secondly, it appears to fail for mismatched hostnames in the request and certificate.

---------
$ echo "<?php echo fsockopen(\"ssl://localhost\", 993); ?>" php -a
Interactive mode enabled

PHP Warning
fsockopen(): Peer certificate CN=`my.test.server' did not match expected CN=`localhost' in - on line 1
PHP Warning:  fsockopen(): Failed to enable crypto in - on line 1
PHP Warning:  fsockopen(): unable to connect to ssl://localhost:993 (Unknown error) in - on line 1
----------
$ echo "<?php echo fsockopen(\"ssl://my.test.server\", 993); ?>" | php -a
Interactive mode enabled

PHP Warning:  fsockopen(): SSL operation failed with code 1. OpenSSL Error messages:
error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed in - on line 1
PHP Warning:  fsockopen(): Failed to enable crypto in - on line 1
PHP Warning:  fsockopen(): unable to connect to ssl://my.test.server:993 (Unknown error) in - on line 1
---------
#installed CA locally
---------
$ echo "<?php echo fsockopen(\"ssl://my.test.server\", 993); ?>" | php -a
Interactive mode enabled

Resource id #1
2014-07-19 00:30:00
http://php5.kiev.ua/manual/ru/function.fsockopen.html
on my FreeBSD vm, with Joomla, I was getting the error 

fsockopen(): unable to connect to ssl://localhost:443 (Unknown error)

when using a contact form and also the module updating process.

After reading other notes on here, regarding certificate validation, I installed the port ca_root_nss

(Root certificates from certificate authorities included in the Mozilla
NSS library and thus in Firefox and Thunderbird.)

Now it works
2016-02-16 02:48:45
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
Trying to fsockopen an ssl:// connection, but it was hanging for a long time, ignoring timeout parameter, and eventually returning false, without an error message. 

Turns out (at least) on Windows it validates certificates and doesn't have a valid certificate store.

This worked for me:

- download Mozilla's certificate store from https://curl.haxx.se/ca/cacert.pem
- copy it inside php installation (for example: c:\php)
- and set it up in php.ini 
       
              openssl.cafile="c:\php\cacert.pem"

My system: Apache/2.4.29 (Win64) OpenSSL/1.0.2n PHP/5.6.38
2018-09-25 10:45:02
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Автор:
PHP (or OpenSSL) may not always choose to use e.g. TLS 1.2, but you can force it to with tlsv1.2://
https://docs.php.net/manual/en/migration56.openssl.php#migration56.openssl.crypto-method

This was a great help to me, given Twitter's recent API changes to require TLS 1.2+.
2019-08-02 14:49:32
http://php5.kiev.ua/manual/ru/function.fsockopen.html
Opening non-existing socket file via `unix//` protocol will result in exception also when suppressing error with @ like:
<?php
$fh 
= @fsockopen('unix:///var/run/file-not-exists.sock');
?>

It is important to know when migrating  from PHP 7.4 to 8.x, as handling error suppression with @ has changed.
2022-09-17 21:23:29
http://php5.kiev.ua/manual/ru/function.fsockopen.html

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