PHP Socket方式提交的post详解

php下POST报文到主机 ，post提交利用代码

<?
/*
** POST报文到主机
*/
function PostToHost($url, $data) {
$url = parse_url($url);
if (!$url) return "couldn parse url";
if (!isset($url[port])) { $url[port] = ""; }
if (!isset($url[query])) { $url[query] = ""; }

$encoded = "";
while (list($k,$v) = each($data)) {
$encoded .= ($encoded ? "&" : "");
$encoded .= rawurlencode($k)."=".rawurlencode($v);
}
$port = $url[port] ? $url[port] : 80;
$fp = fsockopen($url[host], $port, $errno, $errstr);
if (!$fp) return "Failed to open socket to $url[host] $port ERROR: $errno - $errstr";
fputs($fp, sprintf("POST %s%s%s HTTP/1.0\n", $url[path], $url[query] ? "?" : "", $url[query]));
fputs($fp, "Host: $url[host]\n");
fputs($fp, "Content-type: application/x-www-form-urlencoded\n");
fputs($fp, "Content-length: " . strlen($encoded) . "\n");
fputs($fp, "Connection: close\n\n");
fputs($fp, "$encoded\n");
$line = fgets($fp,1024);
if (!eregi("^HTTP/1\.. 200", $line)) return;
$results = ""; $inheader = 1;
while(!feof($fp)) {
$line = fgets($fp,1024);
if ($inheader && ($line == "\n" || $line == "\r\n")) {
$inheader = 0;
}
elseif (!$inheader) {
$results .= $line;
}
}
fclose($fp);
return $results;
}/* end function PostToHost */
?>