php socket方式提交的post详解

答案：<?  
/*  
** POST报文到主机  
*/  
function PostToHost($url, $data) {  
$url = parse_url($url);  
if (!$url) return "couldn\'t parse url";  
if (!isset($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 */  
?> 

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