php通過socket post數據到其它web server

function post_request($url, $data, $referer='') {


// Convert the data array into URL Parameters like a=b&foo=bar etc.
$data = http_build_query($data);

// parse the given URL
$url = parse_url($url);

if ($url['scheme'] != 'http') {
    die('Error: Only HTTP request are supported !');
}

// extract host and path:
$host = $url['host'];
$path = $url['path'];

// open a socket connection on port 80 - timeout: 30 sec
$fp = fsockopen($host, 80, $errno, $errstr, 30);

if ($fp){

    // send the request headers:
    fputs($fp, "POST $path HTTP/1.1\r\n");
    fputs($fp, "Host: $host\r\n");

    if ($referer != '')
        fputs($fp, "Referer: $referer\r\n");

    fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
    fputs($fp, "Content-length: ". strlen($data) ."\r\n");
    fputs($fp, "Connection: close\r\n\r\n");
    fputs($fp, $data);

    $result = '';
    while(!feof($fp)) {
        // receive the results of the request
        $result .= fgets($fp, 128);
    }
}
else {
    return array(
        'status' => 'err',
        'error' => "$errstr ($errno)"
    );
}

// close the socket connection:
fclose($fp);

// split the result header from the content
$result = explode("\r\n\r\n", $result, 2);

$header = isset($result[0]) ? $result[0] : '';
$content = isset($result[1]) ? $result[1] : '';

// return as structured array:
return array(
    'status' => 'ok',
    'header' => $header,
    'content' => $content
);

}
//使用方法
// Submit those variables to the server
$post_data = array(
    'test' => 'foobar',
    'okay' => 'yes',
    'number' => 2
);
// Send a request to example.com
$result = post_request('
if ($result['status'] == 'ok'){


// Print headers
echo $result['header'];

echo '<hr />';

// print the result of the whole request:
echo $result['content'];


}
else {
    echo 'A error occured: ' . $result['error'];
}</pre>