To just take the HTTP content from fsockopen, better wait until feof finish to read the \r\n separator
<?php
//fsockopen, fputs..
$content = "";
$header = "not yet";
while( !feof( $pointer ) ) {
$line = fgets( $pointer, 128 );
if( $line == "\r\n" && $header == "not yet" ) {
$header = "passed";
}
if( $header == "passed" ) {
$content .= $line;
}
}
//fclose..
echo( substr( $content, 2 ) );
?>
fsockopen
(PHP 4, PHP 5)
fsockopen — Open Internet or Unix domain socket connection
Description
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().
Parameters
- hostname
-
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.
- port
-
The port number.
- 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. |
| 4.0.0 | UDP support was added. |
| 3.0.9 | The timeout parameter was added. |
Examples
Example #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);
}
?>
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($fp, 26);
fclose($fp);
}
?>
Notes
Note: Depending on the environment, the Unix domain or the optional connect timeout may not be available.
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.
fsockopen
21-Nov-2008 07:42
07-Nov-2008 12:17
[NOTE BY danbrown AT php DOT net: Updated version. Contains author-submitted bug fixes.]
Here is a way to get an array of cities / states for any zip code anywhere in the US. This example uses a $_GET variable to specify which zip code, but you can get it from any source you wish. This will return actual and acceptable zip code cities (according to USPS), but can be easily modified to include just the actual city.
<?php
if($_GET['zip'])
{
if(!($fp = fsockopen('zip4.usps.com', 80, $errno, $errstr)))
echo 'Could not connect to USPS! Error number: ' . $errno . '(' . $errstr . ')';
else
{
$poststring =
"GET /zip4/zcl_3_results.jsp?zip5=" . $_GET['zip'] . " HTTP/1.0\r\n" .
"Connection: close\r\n\r\n";
fputs($fp, $poststring);
$buffer = '';
while(!feof($fp))
$buffer .= fgets($fp, 128);
fclose($fp);
preg_match('/Actual City name(.*)/s', $buffer, $match);
$temp = explode('Not Acceptable', $match[1]);
// Capture city/state combination for all valid cities
preg_match_all('/headers="pre">(?:<b>)?([\w|\s]+), (\w+)/', $temp[0], $acceptable, PREG_SET_ORDER);
$values = array();
foreach($acceptable as $value)
$values[] =
array
(
'city' => $value[1],
'state' => $value[2]
);
if(count($values) == 0)
echo 'Zip could not be found in the database!';
}
}
else
echo 'Please specify a zip!';
?>
29-Oct-2008 02:04
For those wanting to use fsockopen() to connect to a local UNIX socket who can't find documentation on how to do it, here's a (rough) example:
<?php
$sock = fsockopen('unix:///full/path/to/my/socket.sock', NULL, $errno, $errstr);
fwrite($sock, 'SOME COMMAND'."\r\n");
echo fread($sock, 4096)."\n";
fclose($sock);
?>
27-Oct-2008 12:30
When you're connecting through a proxy server you can't rely on fsockopen returning false to indicate that the connection has failed. (This also applies to fgets and fwrite.)
To check whether the proxy succeeded in contacting the real target host, you need to look for the http response code in the headers that get returned. Typically, if the proxy was unable to reach the host, you'll find a line containing something like:
HTTP/1.0 503 Service Unavailable
12-Oct-2008 02:26
"system level connect()" is not further documented inside the php documentation so it is hard to find out more about error numbers.
someone suggest a more system-close way to find out more about error numbers here: http://www.askapache.com/php/fsockopen-socket.html (an interesting read about fsockopen anyway).
in my case i could debug to the fact that fsocketopen error number 16 was resulted in the inpossibility to resolve a hostname.
09-Sep-2008 05:28
Notice using "tcp" insted of "http"
<?
fsockopen("tcp://example.net",80 , $errno, $errstr, 30);
?>
06-Sep-2008 06:00
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($headers)) { return false; }
if (in_array('Transfer-Coding: chunked',$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;
}
?>
18-Aug-2008 12:34
Sending multiple files with form(modification of sir_reality2001 at yahoo dot com's and Duukkis's scripts):
<?php
$boundary = "AaB03x";
$boundary2 = "BbC04y";
// Build the header
$header = "POST remoteurl HTTP/1.0\r\n";
$header .= "Host: remotehost\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
for ($i=0; $i<count($_FILES['userfile']['name']);$i++)
{
$data .= "--$boundary\r\n";
if ($_FILES['userfile']['name'][$i] != '')
{
$content_file = join("", file($_FILES['userfile']['tmp_name'][$i]));
$data.="Content-Disposition: file; name=\"userfile[$i]\"; filename=\"".$_FILES['userfile']['name'][$i]."\"\r\n";
$data .= "Content-Type: ".$_FILES['userfile']['type'][$i]."\r\n\r\n";
$data .= "".$content_file."\r\n";
$data .="--$boundary\r\n";
}
}
$data .="--$boundary--\r\n";
$header .= "Content-length: " . strlen($data) . "\r\n\r\n";
$fp = fsockopen($remote_server, 80);
?>
21-Jul-2008 02:32
When you try to POST/GET requests via HTTPS over SSL/TLS you should notice this:
<?php
// preconditions
$port = 80 | 443
$host = "www.example.com";
$method = "POST" | "GET";
$contenttype = "text/html" | "text/plain" | "text/xml" | ...;
$data = "<something>";
// script
if($port == 443)
$sslhost = "ssl://".$host;
else
$sslhost = $host;
$fp = fsockopen($sslhost, $port);
fputs($fp, "$method $path HTTP/1.1\r\n");
fputs($fp, "Host: $host\r\n");
fputs($fp, "Content-type: $contenttype\r\n");
fputs($fp, "Content-length: ".strlen($data)."\r\n");
fputs($fp, "Connection: close\r\n");
fputs($fp, "\r\n");
?>
The server usually does not understand the HTTP-header "Host: XXX" if you provide it with the trailing "ssl://" used by fsockopen(); If you do it anyway you probably get a HTTP 400 back as response. :-)
08-Mar-2008 04:15
An edit to my below function for extra headers support and a bit of debugging
( array("key" => "value") type)
<?php
if(!function_exists("download")){
function download($uri, $port = 80, $extra_headers = NULL){
if(!function_exists("stripos")){
function stripos($str, $needle, $offset=0){
return strpos(strtolower($str),strtolower($needle),$offset);
}/* endfunction stripos */
}/* endfunction exists stripos*/
if(!is_int($port))$port = 80;
if(!is_array($extra_headers))$extra_headers = array();
$uri = strtr( strval($uri), array("http://" => "", "https://" => "ssl://", "ssl://" => "ssl://", "\\" => "/", "//" => "/") );
if( ( $protocol = stripos($uri, "://") ) !== FALSE ){
if( ( $domain_pos = stripos($uri, "/", ($protocol + 3)) ) !== FALSE ){
$domain = substr($uri, 0, $domain_pos);
$file = substr($uri, $domain_pos);
}
else{
$domain = $uri;
$file = "/";
}
}
else{
if( ( $domain_pos = stripos($uri, "/") ) !== FALSE ){
$domain = substr($uri, 0, $domain_pos);
$file = substr($uri, $domain_pos);
}
else{
$domain = $uri;
$file = "/";
}
}
$fp = fsockopen($domain, $port, $errno, $errstr, 30);
if(!$fp){
return FALSE;
}
else{
$out = "GET " . $file . " HTTP/1.1\r\n";
$out .= "Host: " . $domain . "\r\n";
foreach( $extra_headers as $nm => $vl ){
$out .= strtr( strval($nm), array( "\r" => "", "\n" => "", ": " => "", ":" => "") ) . ": " . strtr( strval($vl), array( "\r" => "", "\n" => "", ": " => "", ":" => "") ) . "\r\n";
}
$out .= "Connection: Close\r\n\r\n";
$response = "";
fwrite($fp, $out);
while (!feof($fp)) {
$response .= fgets($fp, 128);
}
fclose($fp);
global $http_response_header;
$http_response_header = array();
if( stripos($response, "\r\n\r\n") !== FALSE ){
$hc = explode("\r\n\r\n", $response);
$headers = explode("\r\n", $hc[0]);
if(!is_array($headers))$headers = array();
foreach($headers as $key => $header){
$a = "";
$b = "";
if( stripos($header, ":") !== FALSE ){
list($a, $b) = explode(":", $header);
$http_response_header[trim($a)] = trim($b);
}
}
return end($hc);
}
else if( stripos($response, "\r\n") !== FALSE ){
$headers = explode("\r\n", $response);
if(!is_array($headers))$headers = array();
foreach($headers as $key => $header){
if( $key < ( count($headers) - 1 ) ){
$a = "";
$b = "";
if( stripos($header, ":") !== FALSE ){
list($a, $b) = explode(":", $header);
$http_response_header[trim($a)] = trim($b);
}
}
}
return end($headers);
}
else{
return $response;
}
}
}/*endfunction download*/
}/*endif no function download*/
?>
27-Dec-2007 06:12
<?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, $errstr, 30))
{
@fputs($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)
{
$version_info .= @fread($fsock, 1024);
}
else
{
if (@fgets($fsock, 1024) == "\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 == 2 && $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 $version_info;
?>
05-Dec-2007 11:59
Make a ping test with PHP
The problem with fsockopen is you have to known the destination port.
A real ping function could be :
<?php
function php_ping($url) {
$addr=parse_url($url);
$host=$addr['host'];
exec("ping -c 1 -w 1 $host", $list);
if (strpos($list[4],"1 received")>0) {
return true ;
}
return false;
}
?>
But if your router refuse the ping ... the result will be always false > you may test both (fsockopen and ping)
14-Nov-2007 02:13
After several days of trying to get telnet going from php 5.2, i've come up with http://www.dali.net.nz/Telnet.class.php.txt
based on the one found at http://cvs.adfinis.ch/cvs.php/phpStreamcast/telnet.class.php
example usage:
<?php
$telnet = new Telnet('telnethost.example.com');
$telnet->login('username', 'password');
echo $telnet->exec('ifconfig') . "\n";
echo $telnet->exec('ls -lh') . "\n";
$telnet->disconnect();
?>
05-Sep-2007 03:34
I don't know why it's not mentioned here (or am I missing something), but the DEFAULT stream timeout is set according to default_socket_timeout in your php.ini file. Took forever for me to dig that up....
23-Jul-2007 06:32
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
17-Jul-2007 01:37
I ran into a problem where I needed to make an fsockopen() style connection from one specific ip address on a server with multiple ip aliases. Unfortunately fsockopen() does not allow the specification of a source address making it unsuitable. I could not find any other solutions elsewhere so here is mine for those with php 5.1.0 or greater.
<?php
// connect to the internet using the '192.168.0.100' IP
$opts = array('socket' => array('bindto' => '192.168.0.100:0'));
$context = stream_context_create($opts);
$fp = stream_socket_client("tcp://www.example.com:80", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $context);
?>
Now $fp can be used like a resource handle returned by a vanilla fsockopen() call!
03-Jul-2007 03:58
easy get UIDL.
A code is better than the feof.
<?php
$fp = fsockopen($host, 110, $errno, $errstr, 5);
if ($fp > 0) {
fread($fp,1024);
fputs($fp, "USER $user\r\n");
fread($fp,1024);
fputs($fp, "PASS $pass\r\n");
fread($fp,1024);
fputs($fp, "UIDL\r\n");
fgets($fp,1024);
do {
$line = rtrim(fgets($fp, 1024));
if ($line == '.') break;
list(, $UIDL) = split(' ', $line, 2);
echo $UIDL;
} while ($line != '.');
fputs($fp, "QUIT\r\n");
}
fclose($fp);
?>
26-May-2007 04:29
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, $errstr, 30);
if ($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)) {
$data .= @fgets($fid, 128);
}
fclose($fid);
return !empty($data);
} else {
return false;
}
}
?>
HTTP/1.1 requires that all clients support chunked transfer encoding. If you don't want to implement that and just want something simple, make HTTP/1.0 requests instead:
<?php
...
fputs("GET $path HTTP/1.0\r\n");
fputs("Host: $host\r\n");
...etc..
?>
02-Mar-2007 05:17
[EDIT by danbrown AT php DOT net: This note contains a big-fixed version of the user function decode_body(). Fix by (martjean77 at hot dot sapm dot mail dot com) [sic].]
Handling chunked data needs careful handling, because the data can also be compressed inside the chunked data, and chunked data can have many parts, so you need to watch for that. Here a simple example that uses one function decode_header(); to build the header into a key => value array, so it makes it easy to test for the content and transfer types inside the decode_body(); function!
<?php
function decode_header ( $str )
{
$part = preg_split ( "/\r?\n/", $str, -1, PREG_SPLIT_NO_EMPTY );
$out = array ();
for ( $h = 0; $h < sizeof ( $part ); $h++ )
{
if ( $h != 0 )
{
$pos = strpos ( $part[$h], ':' );
$k = strtolower ( str_replace ( ' ', '', substr ( $part[$h], 0, $pos ) ) );
$v = trim ( substr ( $part[$h], ( $pos + 1 ) ) );
}
else
{
$k = 'status';
$v = explode ( ' ', $part[$h] );
$v = $v[1];
}
if ( $k == 'set-cookie' )
{
$out['cookies'][] = $v;
}
else if ( $k == 'content-type' )
{
if ( ( $cs = strpos ( $v, ';' ) ) !== false )
{
$out[$k] = substr ( $v, 0, $cs );
}
else
{
$out[$k] = $v;
}
}
else
{
$out[$k] = $v;
}
}
return $out;
}
function decode_body ( $info, $str, $eol = "\r\n" )
{
$tmp = $str;
$add = strlen ( $eol );
$str = '';
if ( isset ( $info['transfer-encoding'] ) && $info['transfer-encoding'] == 'chunked' )
{
do
{
$tmp = ltrim ( $tmp );
$pos = strpos ( $tmp, $eol );
$len = hexdec ( substr ( $tmp, 0, $pos ) );
if ( isset ( $info['content-encoding'] ) )
{
$str .= gzinflate ( substr ( $tmp, ( $pos + $add + 10 ), $len ) );
}
else
{
$str .= substr ( $tmp, ( $pos + $add ), $len );
}
$tmp = substr ( $tmp, ( $len + $pos + $add ) );
$check = trim ( $tmp );
}
while ( ! empty ( $check ) );
}
else if ( isset ( $info['content-encoding'] ) )
{
$str = gzinflate ( substr ( $tmp, 10 ) );
}
else {
$str = $tmp;
}
return $str;
}
if ( ( $io = fsockopen( "www.yahoo.com", 80, $errno, $errstr, 5 ) ) !== false )
{
$send = "GET / HTTP/1.1\r\n";
$send .= "Host: www.yahoo.com\r\n";
$send .= "User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20021204\r\n";
$send .= "Referer: http://www.yahoo.com/\r\n";
$send .= "Accept: text/xml,application/xml,application/xhtml+xml,";
$send .= "text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,";
$send .= "image/jpeg,image/gif;q=0.2,text/css,*/*;q=0.1\r\n";
$send .= "Accept-Language: en-us, en;q=0.50\r\n";
$send .= "Accept-Encoding: gzip, deflate, compress;q=0.9\r\n";
$send .= "Connection: Close\r\n\r\n";
fputs ( $io, $send );
