PHP Post data with Fsockopen

Question

I am attempting to post data using fsockopen, and then returning the result. Here is my current code:

Answer 1

There are many small errors in your code. Here's a snippet which is tested and works.

<?php

$fp = fsockopen('example.com', 80);

$vars = array(
    'hello' => 'world'
);
$content = http_build_query($vars);

fwrite($fp, "POST /reposter.php HTTP/1.1\r\n");
fwrite($fp, "Host: example.com\r\n");
fwrite($fp, "Content-Type: application/x-www-form-urlencoded\r\n");
fwrite($fp, "Content-Length: ".strlen($content)."\r\n");
fwrite($fp, "Connection: close\r\n");
fwrite($fp, "\r\n");

fwrite($fp, $content);

header('Content-type: text/plain');
while (!feof($fp)) {
    echo fgets($fp, 1024);
}

And then at example.com/reposter.php put this

<?php print_r($_POST);

When run you should get output something like

HTTP/1.1 200 OK
Date: Wed, 05 Jan 2011 21:24:07 GMT
Server: Apache
X-Powered-By: PHP/5.2.9
Vary: Host
Content-Type: text/html
Connection: close

1f
Array
(
    [hello] => world
)
0

Answer 2

Try this in reposter.php

$raw_data = $GLOBALS['HTTP_RAW_POST_DATA']; 
parse_str( $raw_data, $_POST );

print_r( $_POST );

Because, the data wasn't in the $_POST[] variables but it was in the $GLOBALS['HTTP_RAW_POST_DATA'] variable.

Answer 3

Curl is too heavy in some case, to use post_to_host():

//GET:
$str_rtn=post_to_host($str_url_target, array(), $arr_cookie, $str_url_referer, $ref_arr_head, 0);

//POST:
$arr_params=array('para1'=>'...', 'para2'=>'...');
$str_rtn=post_to_host($str_url_target, $arr_params, $arr_cookie, $str_url_referer, $ref_arr_head);

//POST with file:
$arr_params=array('para1'=>'...', 'FILE:para2'=>'/tmp/test.jpg', 'para3'=>'...');
$str_rtn=post_to_host($str_url_target, $arr_params, $arr_cookie, $str_url_referer, $ref_arr_head, 2);

//raw POST:
$tmp=array_search('uri', @array_flip(stream_get_meta_data($GLOBALS[mt_rand()]=tmpfile())));
$arr_params=array('para1'=>'...', 'para2'=>'...');
file_put_contents($tmp, json_encode($arr_params));
$arr_params=array($tmp);
$str_rtn=post_to_host($str_url_target, $arr_params, $arr_cookie, $str_url_referer, $ref_arr_head, 3);

//get cookie and merge cookies:
$arr_new_cookie=get_cookies_from_heads($ref_arr_head)+$arr_old_cookie;//don't change the order

//get redirect url:
$str_url_redirect=get_from_heads($ref_arr_head, 'Location');

post to host php project location: http://code.google.com/p/post-to-host/

Answer 4

Try this:

<?php
$data="stuff=hoorah\r\n";
$data=urlencode($data);

$fp = fsockopen("www.website.com", 80, $errno, $errstr, 30);
if (!$fp) {
    echo "$errstr ($errno)<br />\n";
} else {
    $out = "POST /script.php HTTP/1.0\r\n";
    $out .= "Host: www.webste.com\r\n";
    $out .= "Content-Type: application/x-www-form-urlencoded\r\n";
    $out .= 'Content-Length: ' . strlen($data) . "\r\n\r\n";
    $out .= "Connection: Close\r\n\r\n";
    fwrite($fp, $out);
    fwrite($fp, $data);
    while (!feof($fp)) {
        echo fgets($fp, 128);
    }
    fclose($fp);
}
?> 

Some character escapes such as \n do not work in single quotes.

Answer 5

Sorry for refresh, but for people who still have problem like this, change HTTP/1.0 to HTTP/1.1 and it will work.

Answer 6

Nice one Tamlyn, works great!

For those that also need to send get vars along with the url,

//change this:

fwrite($fp, "POST /reposter.php HTTP/1.1\r\n");

//to:

$query = 'a=1&b=2';
fwrite($fp, "POST /reposter.php?".$query." HTTP/1.1\r\n");