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fsockopen

(PHP 3, PHP 4, PHP 5)

fsockopen --  Open Internet or Unix domain socket connection

Description

resource fsockopen ( string target [, int port [, int &errno [, string &errstr [, float timeout]]]] )

Initiates a socket connection to the resource specified by target. PHP supports targets in the Internet and Unix domains as described in 附录 N. A list of supported transports can also be retrieved using stream_get_transports().

注: 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.

As of PHP 4.3.0, if you have compiled in OpenSSL support, 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.

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 and if the optional errno and errstr arguments are present they will be set to indicate the actual system level error 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. Note that the errno and errstr arguments will always be passed by reference.

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

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

例子 1. fsockopen() Example

<?php
$fp = fsockopen("www.example.com", 80, $errno, $errstr, 30);
if (!$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($fp, 128);
    }
    fclose($fp);
}
?>
The example below shows how to retrieve the day and time from the UDP service "daytime" (port 13) in your own machine.

例子 2. Using UDP connection

<?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($fp, 26);
    fclose($fp);
}
?>

警告

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.

注: 当指定数字的 IPv6 地址（例如 fe80::1）时必须将 IP 地址放在方括号内。例如 tcp://[fe80::1]:80。

注: The timeout parameter was introduced in PHP 3.0.9 and UDP support was added in PHP 4.

See also pfsockopen(), stream_set_blocking(), stream_set_timeout(), fgets(), fgetss(), fwrite(), fclose(), feof(), and the Curl extension.


add a note add a note User Contributed Notes
jasoncernivsky at gmail dot com
30-Oct-2006 03:13
For IPN I recommend to customize a nice framework called LibePal. It has been very handy here. We currently base more than 10 customer sites with the same tool. It works by CURL I think.
john at realtourvision dot com
15-Aug-2006 09:17
when requesting remote filesize via a socket in PHP5, do NOT use the IP address, use the domain name instead.
albertohf at hotmail dot com
04-Aug-2006 12:01
I had a problem receving a "Content-Transfer: chunked" response i tried some prior codes but i had some problems too and i decided to code my own (it post something and receive the response although it's chunked). I hope you enjoy...

   function doPost($uri,$postdata,$host){
       $da = fsockopen($host, 80, $errno, $errstr);
       if (!$da) {
           echo "$errstr ($errno)<br/>\n";
           echo $da;
       }
       else {
           $salida ="POST $uri  HTTP/1.1\r\n";
           $salida.="Host: $host\r\n";
           $salida.="User-Agent: PHP Script\r\n";
           $salida.="Content-Type: application/x-www-form-urlencoded\r\n";
           $salida.="Content-Length: ".strlen($postdata)."\r\n";
           $salida.="Connection: close\r\n\r\n";
           $salida.=$postdata;
           fwrite($da, $salida);
                     while (!feof($da))
               $response.=fgets($da, 128);
           $response=split("\r\n\r\n",$response);
           $header=$response[0];
           $responsecontent=$response[1];
           if(!(strpos($header,"Transfer-Encoding: chunked")===false)){
               $aux=split("\r\n",$responsecontent);
               for($i=0;$i<count($aux);$i++)
                   if($i==0 || ($i%2==0))
                       $aux[$i]="";
               $responsecontent=implode("",$aux);
           }//if
           return chop($responsecontent);
       }//else
   }//function-doPost
tylernt at bigfoot dot com
19-Jul-2006 02:57
If you are composing your own HTTP POST to upload to a form or upload a file, you need to realize that when you *use* your boundary to separate the parts, you need to prepend two dashes (--) to whatever you *defined* your boundary as. For example, if you define your boundary as --1234, then you need to send ----1234 as your boundaries.

If you forget to prepend those two dashes, it is particularly frustrating because the server will return a 200 OK / accepted code, but your receiving form will not recieve any POSTed data.

I only wasted a day and a half on that one.
bimal dot das at maxartists dot com
08-Jun-2006 02:22
Here is how to POST a form action to a SSL server's cgi and retrieve output with pfsockopen

<?php

$host = gethostbyaddr($_SERVER['REMOTE_ADDR']);

# working vars
$host = 'www.example.com';
$service_uri = '/cgi-bin/processACT';
$vars ='code=22&act=TEST';

# compose HTTP request header
$header = "Host: $host\r\n";
$header .= "User-Agent: PHP Script\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: ".strlen($vars)."\r\n";
$header .= "Connection: close\r\n\r\n";

$fp = pfsockopen("ssl://".$host, 443, $errno, $errstr);
if (!$fp) {
   echo "$errstr ($errno)<br/>\n";
   echo $fp;
} else {
   fputs($fp, "POST $service_uri  HTTP/1.1\r\n");
   fputs($fp, $header.$vars);
   fwrite($fp, $out);
   while (!feof($fp)) {
       echo fgets($fp, 128);
   }
   fclose($fp);
}

?>
31-May-2006 01:42
For everyone complaining about wasting their time because the socket remained open when using HTTP 1.1

Why don't you try and read the RFC for HTTP before you start trying to implement a simple HTTP client?

http://www.w3.org/Protocols/rfc2616/rfc2616.html
dmitry dot polushkin at gmail dot com
22-May-2006 08:45
If you want to GET/POST some page through the HTTP protocol and if you want to keep-alive your connection, you may have a problem with a loop-stuck. Here is hint how to solve it:
<?php
$fp = fsockopen ("www.php.net", 80, $errno, $errstr, 30);
if(!$fp) {
   echo $errstr;
} else {
   fwrite($fp, "GET / HTTP/1.1\r\nHost: www.php.net\r\nConnection: Keep-Alive\r\n\r\n");
   $data = '';
   while(!feof($fp)) {
       $data .= fread($fp, 4096);
       if(substr($data, -9)=="\r\n\r\n0\r\n\r\n") {
           exit;
       }
   }
}
echo $data;
?>
leibwaechter at web dot de
05-May-2006 06:15
If you want to connect to a SSL server by HTTPS, you have to write
fsockopen('ssl://www.example.com', 443, $errno, $errstr, 30);
instead of
fsockopen('www.example.com', 443, $errno, $errstr, 30);

If have needed days to find that out.
yourpicture at hotpop dot com
05-May-2006 02:30
When your connection times out the server may issue Fatal error: Maximum execution time of 30 seconds exceeded in ...
To get around this try this method used with error handling and copied method for ping operation.

<?php
   function Ping(){
       // false proxy used to generate connection error
       $ProxyServer = "116.155.95.163";
       $ProxyPort = 8080;
       $timeout=10;
       echo "Opening ProxyServer $ProxyServer<br>";
       // must use next two statements
       Set_Time_Limit(0);  //Time for script to run .. not sure how it works with 0 but you need it
       Ignore_User_Abort(True); //this will force the script running at the end
      
       $handle = fsockopen($ProxyServer, $ProxyPort,$errno,$errstr,$timeout);       
       if (!$handle){
           echo "Failed to open ProxyServer $ProxyServer errno=$errno,errstr=$errstr<br>";
           return 0;
       }
       else {
           // copied method for PING like time operation
           $status = socket_get_status($handle);
           echo "Opened ProxyServer $ProxyServer<br>";
          
           //Time the responce
           list($usec, $sec) = explode(" ", microtime(true));
           $start=(float)$usec + (float)$sec;
          
          
           $timeout=120;
           stream_set_timeout($handle,$timeout);     
           //send somthing
           ini_set('display_errors','0');
           $write=fwrite($handle,"echo this\n");
           if(!$write){
               return 0;
           }
          
           echo "Try To Read<br>";
           stream_set_blocking($handle,0); 
           //Try to read. the server will most likely respond with a "ICMP Destination Unreachable" and end the read. But that is a responce!
           fread($handle,1024);
           fclose($handle);
           echo "Read<br>";
           ini_set('display_errors','1');
                
           //Work out if we got a responce and time it         
           list($usec, $sec) = explode(" ", microtime(true));
           $laptime=((float)$usec + (float)$sec)-$start;
           if($laptime>$timeout)
               return 0;
           //else 
           //    $laptime = round($laptime,3);
           return $laptime;
       }
   }

   // must use ErrorHandler to avoid php error being printed to screen
   function userErrorHandler($errno, $errmsg, $filename, $linenum, $vars)
   {
       // you can set this to what ever you like.
       echo "In Error Handler<br>";
       return 0;
   }

   $old_error_handler = set_error_handler("userErrorHandler");

   $time = Ping();
   echo "Time=$time<br>";
   echo "Done Checking<br>";
?>

Response Will be:
Opening ProxyServer 116.155.95.163
In Error Handler
Failed to open ProxyServer 116.155.95.163 errno=10060,errstr=A connection attempt failed
because the connected party did not properly respond after a period of time, or
established connection failed because connected host has failed to respond.
Time=0
Done Checking

Thanks to everyone for your source code examples.
AndE
yadiutama_skom at yahoo dot com
07-Apr-2006 05:09
This is a simple example for sending and retrieve SOAP message by using fsockopen:

<?php
$fp = @fsockopen("www.example.com", 80, $errno, $errstr);
if (!$fp) {
   echo "$errstr ($errno)<br />\n";
} else {

$soap_out  = "POST /example/exampleServer.php HTTP/1.0\r\n";
$soap_out .= "Host: www.example.com\r\n";
$soap_out .= "User-Agent: MySOAPisOKGuys \r\n";
$soap_out .= "Content-Type: text/xml; charset=ISO-8859-1\r\n";
$soap_out .= "Content-Length: 512\r\n\r\n";
$soap_out .= '<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body>
<ns5973:contact xmlns:ns5973="http://tempuri.org">
<__numeric_0><id  xsi:nil="true"/></__numeric_0>
</ns5973:contact>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>';

   fputs($fp, $soap_out, strlen($soap_out));  // send request SOAP

   echo "<xmp>".$out."</xmp>";

   while (!feof($fp)) {
       $soap_in . = fgets($fp, 100);
   }

   echo "<xmp>$soap_in</xmp>";  //display response SOAP

   fclose($fp);
}
?>

And this is an example result:

POST /soap/example/contactServer.php HTTP/1.0
Host: www.example.com
User-Agent: MySOAPisOKGuys
Content-Type: text/xml; charset=ISO-8859-1
Content-Length: 512
<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body><ns5973:contact
xmlns:ns5973="http://tempuri.org"><__numeric_0><id
xsi:nil="true"/></__numeric_0></ns5973:contact>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

HTTP/1.1 200 OK
Date: Thu, 06 Apr 2006 07:03:26 GMT
Server: Apache/1.3.23 (Win32)
X-Powered-By: PHP/4.1.1
X-SOAP-Server: MySOAPisOKGuys
Content-Length: 625
Connection: close
Content-Type: text/xml; charset=ISO-8859-1
<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body><ns1:contactResponse
xmlns:ns1="http://tempuri.org">
<return xsi:type="xsd:string">
</return>
</ns1:contactResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
Duukkis
27-Feb-2006 09:13
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_server, 80);
       // then just
       fputs($fp, $header.$data);
       fclose($fp);
?>
18-Feb-2006 04:49
Dante
28-Dec-2005 06:42
If you're using code like the manual's example, it is a good idea to keep using HTTP/1.0 instead of changing it to HTTP/1.1. Using HTTP/1.1 with fsockopen sometimes results in junk before and after the body content (but not in the headers).

This is not actually true, if you are using HTTP/1.1, you will most likely be receiving chunked data. The 'junk' that you are seeing is probably the size of the chunks in hex.
ittasks at gmail dot com
16-Feb-2006 08:02
login to the site prior to downloading page:

In some wierd situations site security is based on
 ASPSESSION ID and where could be a
 login asp  script in one place, and the actual page with
information in another place.

for such cases you have to submit ( POST ) you login and
password first, when grab ASP session (and also some
cookies from response, and when use that ASP SESSION in
second request to the actual page: (i took some parts of
codes from other ppl)
<?php
//submit login form: (url, post data, extra headers (optional))
//do not put  http into URL, just domain name
$mycookies = GetCookies("www.yourdomain.com/login.login.asp",
"password=12345&username=your_username&submit=LOGIN&set=Y","");
//some extra params if you need them
// echo "Cookies:<br><pre>\n".$mycookies."\n</pre>";
//$body =PostPage("www.yourdomain.com/coolpage.asp",
//"action=zzz",$mycookies);
//echo "<br>Body:<br>\n".$body."\n";
//im using get page - so it goes like this:
$opts = array('http'=>array('method'=>"GET",
'header'=>"Accept-language: en\r\nCookie: ".$mycookies."\r\n" ));
$context = stream_context_create($opts);
$fp = fopen('http://www.yourdomain.com/coolpage.asp?p1=1&p2=23', 'r', false, $context);
fpassthru($fp);
$html = fread($fp, 1000000);
fclose($fp);
echo $html;

function PostPage($host,$query,$others=''){
   $path=explode('/',$host);
   $host=$path[0];
   unset($path[0]);
   $path='/'.(implode('/',$path));
$post="POST $path HTTP/1.1\r\nHost: $host\r\n";
$post.="Content-type: application/x-www-form-";
$post.="urlencoded\r\n${others}";
$post.="User-Agent: Mozilla 4.0\r\nContent-length: ";
$post.=strlen($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 $r;
}
function GetCookies($host,$query,$others=''){
   $path=explode('/',$host);
   $host=$path[0];
   unset($path[0]);
   $crlf = "\r\n";
   $path='/'.(implode('/',$path));
   $post="POST $path HTTP/1.1\r\nHost: $host\r\n";
$post.="Content-type: application/x-www-form-urlencoded\r\n${others}";
$post.="User-Agent: Mozilla 4.0\r\nContent-length: ";
$post.=strlen($query)."\r\nConnection: close\r\n\r\n$query";
   $h=fsockopen($host,80);
   fwrite($h,$post);
   $r="";
   for($a=0;!$a;){
       $b=fread($h,512);
       echo $b;
       $r.=$b;
       $gotSession=strpos($r,"ASPSESSION");
   if($gotSession)
     if(strpos($r, $crlf . $crlf,$gotSession)>0) break;
       $a=(($b=='')?1:0);
   }
   fclose($h);
   $arr = split("Set-Cookie:",$r);
   $AllCookies="";$count=1;
   while ($count < count($arr)) {
$AllCookies.=substr($arr[$count].";",
0,strpos($arr[$count].";",";")+1);

 $count++;}
   return $AllCookies;

}
 ?>

It's not optimized , but i hope someone might find it usefull.
Best Regards
DRY_GIN
na8ur
16-Jan-2006 08:41
if you send some header information to any server eg. sending cookie data, don't forget to have \r\n\r\n (double new line) at the end of your header data.
davem
06-Jan-2006 01:25
For data returned as "chunked" you cannot simply loop through the file with fgets and return a correct response.

This function has worked for me, any improvements welcome:

//parse response text out of chunked response
function ParseChunked($response)
{
   $response = explode("\r\n",$response);
   for($i=0; $i<count($response); $i++)
       if(hexdec($response[$i])==strlen($response[$i+1]))
         $return.=$response[++$i];
   return $return;
}
Dante
28-Dec-2005 04:42
If you're using code like the manual's example, it is a good idea to keep using HTTP/1.0 instead of changing it to HTTP/1.1. Using HTTP/1.1 with fsockopen sometimes results in junk before and after the body content (but not in the headers).
SysCo/al - developer [at] sysco[dot] ch
24-Dec-2005 09:41
We have implemented a Syslog class in PHP following the RFC 3164 rules. Using this class, it is possible to send syslog messages to external servers.
We use this class for example to log information, to synchronize some processes or to launch external "threads".

Class abstract, full class implementation can be found at http://developer.sysco.ch/php/
      
<?php

   // (...)
  
   class Syslog
   {
       var $_facility; // 0-23
       var $_severity; // 0-7
       var $_hostname; // no embedded space, no domain name, only a-z A-Z 0-9 and other authorized characters
       var $_fqdn;
       var $_ip_from;
       var $_process;
       var $_content;
       var $_msg;
       var $_server;  // Syslog destination server
       var $_port;    // Standard syslog port is 514
       var $_timeout;  // Timeout of the UDP connection (in seconds)
      
       // (...)
  
       function Send($server = "", $content = "", $timeout = 0)
       {
           // (...)
          
           $actualtime = time();
           $month      = date("M", $actualtime);
           $day        = substr("  ".date("j", $actualtime), -2);
           $hhmmss    = date("H:i:s", $actualtime);
           $timestamp  = $month." ".$day." ".$hhmmss;
          
           $pri    = "<".($this->_facility*8 + $this->_severity).">";
           $header = $timestamp." ".$this->_hostname;
          
           // (...)
          
           $msg = $this->_process.": ".$this->_fqdn." ".$this->_ip_from." ".$this->_content;
          
           $message = substr($pri.$header." ".$msg, 0, 1024);
          
           $fp = fsockopen("udp://".$this->_server, $this->_port, $errno, $errstr, $this->_timeout);
           if ($fp)
           {
               fwrite($fp, $message);
               fclose($fp);
               $result = $message;
           }
           else
           {
               $result = "ERROR: $errno - $errstr";
           }
           return $result;
       }

   // (...)
?>

Example
<?php
   require_once('syslog.php');
   $syslog = new Syslog();
   $syslog->Send('192.168.0.12', 'My first PHP syslog message');
?>
sivann at cs dot ntua dot gr
09-Dec-2005 11:40
This is an ident request example. If your client is running identd your real username will be known by the server.
It is also usefull to identify people bypassing IP ACLs by using SOCKS proxy and dynamic IP forwarding. If the socks proxy server uses ident (most unices do) you will know his real username.
For more information see RFC1413
Timeout of 2 seconds in the example may not be enough.

<?
error_reporting(E_ALL);
$remip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
$remport = $HTTP_SERVER_VARS['REMOTE_PORT'];

ob_implicit_flush();
$fp = fsockopen($remip, 113, $errno, $errstr, 2);
if (!$fp) {
   echo "$errstr ($errno)<br>\n";
   exit;
}
else {
   $out = "$remport, 80\r\n";
   fwrite($fp, $out);
   $answer=fgets($fp, 128);
}
fclose($fp);
$ansparts=explode(":",$answer);
$user=chop($ansparts[3]);
echo "You are $user@$remip:$remport";

?>
Kiki_EF
27-Oct-2005 03:20
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_cont, strpos($proxy_cont,"\r\n\r\n")+4);
   if (strstr($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);
?>
Based on http://de2.php.net/manual/de/function.fopen.php#53090
Thanx
alex at renesource dot lv
29-Sep-2005 03:52
Setting up SSL connection to server that requires client certificate (https).

Function fsockopen() has 5 arguments only in PHP5. There is sixth undocumented argument in PHP4 fsockopen() function . Therefore code in note 'alex at renesource dot lv 16-Mar-2004 09:07' will work with PHP4 only.

You can use the following code to post request to HTTPS server that requires client certificate to establish SSL connection:

<?php
# working vars
$host = 'ssl.host.com';
$service_uri = '/some/service/address';
$local_cert_path = '/path/to/keys.pem';
$local_cert_passphrase = 'pass_to_access_keys';
$request_data = '<some><xml>data</xml></some>';

# array with the options to create stream context
$opts = Array();

# compose HTTP request header
$header = "Host: $host\\r\\n";
$header .= "User-Agent: PHP Script\\r\\n";
$header .= "Content-Type: text/xml\\r\\n";
$header .= "Content-Length: ".strlen($request_data)."\\r\\n";
$header .= "Connection: close";

# define context options for HTTP request (use 'http' index, NOT 'httpS')
$opts['http']['method'] = 'POST';
$opts['http']['header'] = $header;
$opts['http']['content'] = $request_data;

# define context options for SSL transport
$opts['ssl']['local_cert'] = $local_cert_path;
$opts['ssl']['passphrase'] = $local_cert_passphrase;

# create stream context
$context = stream_context_create($opts);

# POST request and get response
$filename = 'https://'.$host.$service_uri;
$content = file($filename, false, $context);
$response_data = implode('', $content);

?>
robin at pozytron dot com
22-Aug-2005 06:38
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.
l0gic at l0gic dot net
13-Aug-2005 02:54
After a little experimenting, I worked out how to reliably handle chunked HTTP/1.1 data. The following code assumes a connection has already been opened as $fp, and the response header has been read into the array $header. A loop is used to read data until the entire chunk length has been read, due to fsockopen()'s tendency to stop reading when a new packet is received. Please note that I have not put this code through thorough testing; this is merely to demonstrate the methodology.

if (isset($header['Transfer-Encoding'])) {
  
   // Read the length of the current chunk
   while ($chunk_length = hexdec(fgets($fp))) {
      
       // Initialize counter and buffer
       $read_length = 0;
       $data = NULL;
      
       // Read $chunk_length bytes of data
       while ($read_length < $chunk_length) {
          
           $data .= fread($fp, $chunk_length - $read_length);
           $read_length = strlen($data);
          
           }
      
       // Output the data read
       echo $data;
      
       }
}
dna at revold-design dot de
10-Aug-2005 08:04
Something useful for ICQ:
<?php
$icquin = "197829943";
function GetICQ($uin) {
   if (!is_numeric($uin)) return FALSE;

   $fp = fsockopen('status.icq.com', 80, &$errno, &$errstr, 8);
   if (!$fp) {
   return "N/A";
       }
   else {

   $request = "HEAD /online.gif?icq=$uin HTTP/1.0\r\n"
             ."Host: web.icq.com\r\n"
             ."Connection: close\r\n\r\n";
   fputs($fp, $request);

   do {
       $response = fgets($fp, 1024);
   }
   while (!feof($fp) && !stristr($response, 'Location'));

   fclose($fp);

   if (strstr($response, 'online1')) return 'Online';
   if (strstr($response, 'online0')) return 'Offline';
   if (strstr($response, 'online2')) return 'N/A';
   // N/A means, this User set the Option, his Online
   // Status cannot be shown over the Internet
  
   return FALSE;
   }
}

echo GetICQ($icquin);
?>
Jeremy
06-Jul-2005 02:52
The only think wrong with richard burton's code as regarding apache is that
$byte != "\\r" should be
$byte == "\r"
suma at fairrank dot noadsplease dot de
31-May-2005 04:51
To retrieve a page from a HTTP server over a SSL connection (HTTPS), execute this script with an SSL enabled build of PHP, and enter your data.

$fp = pfsockopen("ssl://yourwebsite.com", 443, $errno, $errstr);
if (!$fp) {
   echo "$errstr ($errno)<br/>\n";
   echo $fp;
} else {
   fputs($fp, "GET /path/page.php  HTTP/1.1\r\n");
   fputs($fp, "Host: yourwebsite.com\r\n");
   fputs($fp, "Authorization: Basic ".base64_encode("username:password")."\r\n");
   fputs($fp, "Connection: close\r\n\r\n");
   fwrite($fp, $out);
   while (!feof($fp)) {
       echo fgets($fp, 128);
   }
   fclose($fp);
mzvarik at gmail dot com
24-May-2005 04:09
If you just want to get the page content it's better to use fopen instead of fsockopen... I did a benchmark and it's faster... depends on how big is the content, getting it using fopen can be sometimes even 2x faster.
richard dot lajaunie at cote-azur dot cci dot fr
19-May-2005 03:10
<?
/************************************************************
* 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 on the same page
**************************************************************/

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($usenet, 128);
       $j++;
       }
   stream_set_timeout($usenet, 2); // set the timeout for the fgets
   $j = 0;
       while (!feof($usenet)){
       $ret = fgets($usenet, 128);
       $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";
?>
saul dot dobney at dobney dot com
19-Apr-2005 11:40
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:

while (!feof($fp)) {
   $line=fgets($fp, 1024);               
   if (stristr($line,"location:")!="") {
   $redirect=preg_replace("/location:/i","",$line);
   }
}

Then don't forget to 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
nospam at cronjob dot de
17-Apr-2005 08:06
Be careful if you open a lot of sockets in one php-file!
I had a script which checked a lot of domains and opened sockets to the whois-server. Even that I closed the connections after I checked a domain (fclose), the sockets seemed to stay open. After a while (about 1000 connections) the php-script couldn't open any more sockets.
It took a while to fix this problem. I did this by writing a script which started the check-scripts with wget (or lynx). I started 5 scripts parallel and just checked 20 domains. After that new 5 scripts where opened. That helped me not to open too many sockets in one php-file because when a php-script ends, all open sockets are closed.

Example:

start.php:
<?php
ignore_user_abort(true);
for($i=0; $i<100; $i++) {
   echo $i."- "; flush();
   $exec_string = 'lynx http://domain.tld/whois.php &';
   $output = `$exec_string`;
   sleep(10);
   $exec_string = 'killall lynx';
   $output = `$exec_string`;
}
?>

whois.php:
<?php
ignore_user_abort(true);
for($i=0; $i<50; $i++) {
   fsockopen(whois.server...);
   // here you process the whois-things
}
?>

Hope this'll help some people!
ahauk at NO-SPAM dot synergynt dot net
29-Mar-2005 06:38
The following script will login to a POP3 account using the username, password and server name provided via a standard form; determine the amount of messages using a binary search; then purge all messages.

<?php
   $server = $_POST["server"];
   $user = $_POST["user"];
   $pass = $_POST["pass"];
   $count = 1;
   $low = 0;
   $mid = 0;
   $high = 100000;
   $connection = fsockopen($server, 110, $errno, $errstr, 30);

   if(!$connection) {
       print "Connect Failed: $errstr ($errno)";
   } else {
       $output = fgets($connection, 128);
       fputs($connection, "user $user\n");
       $output = fgets($connection, 128);
       fputs($connection, "pass $pass\n");
       $output = fgets($connection, 128);
       while($low < $high - 1) {
           $mid = floor(($low + $high) / 2);
           fputs($connection, "list $mid\n");
           $output = fgets($connection, 128);
           $subout = substr($output, 0, 4);
           if($subout == "+OK ") {
               $low = $mid;
               continue;
           }
           elseif($subout == "-ERR") {
                   $high = $mid;
                   continue;
           } else {
               break;
               print "An error has occurred. Please try again.";
           }
       }
     &n