PHP simulates socket connection once and sends data multiple times.

 代码如下: 
//post.php 
function Post($host,$port) 
{ 
//$host="127.0.0.1"; 
//建立连接 
$conn = fsockopen($host,$port); 
if (!$conn) 
{ 
die("Con error"); 
} 
//循环发送5次数据 
// 
for($i = 0;$i<5;$i++) 
{ 
$data="user_name=admin".$i; 
WriteData($conn,$host,$data); 
echo $i."
"; 
} 
fclose($conn); 
} 
function WriteData($conn,$host,$data) 
{ 
$header = "POST /test.php HTTP/1.1rn"; 
$header.= "Host : {$host}rn"; 
$header.= "Content-type: application/x-www-form-urlencodedrn"; 
$header.= "Content-Length:".strlen($data)."rn"; 
//Keep-Alive是关键 
$header.= "Connection: Keep-Alivernrn"; 
$header.= "{$data}rnrn"; 
fwrite($conn,$header); 
//取结果 
//$result = ''; 
//while(!feof($conn)) 
//{ 
// $result .= fgets($conn,128); 
/