PHP判断服务器端口是否打开的代码_PHP教程

记录一下，以后备用

php 

$host = www.google.com; //要ping的地址，也可以是IP  


$port = 80; //要ping的端口  


$num = 3;  

function microtime_float()  
{  
list($usec, $sec) = explode(" ", microtime());  
return ((float)$usec + (float)$sec);  
}  
function ping($host,$port)  
{  

$time_start = microtime_float();  


$ip = gethostbyname($host);  


$fp = @fsockopen($host,$port,&$errno,&$errstr,1);  

if(!$fp) return replay time out!;  

$get = "GET / HTTP/1.1
Host:".$host."
Connection: Close

";  

@fputs($fp,$get);  
@fclose($fp);  

$time_end = microtime_float();  


$time = $time_end - $time_start;  


$time = ceil($time * 1000);  


return Reply from .$ip.: time=.$time.msbr />;  

}  

echo Pinging .$host. [.gethostbyname($host).] with Port:.$port. of data:br />br />."
";  


for($i = 0;$i  $num;$i++)  

{  
ping($host,$port);  
sleep(1);  
ob_flush();  
flush();  
}  

?> 

本文摘自 http://www.cnblogs.com/luoine/archive/2010/12/01/1893156.html

http://www.bkjia.com/PHPjc/486053.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/486053.htmlTechArticle记录一下，以后备用 ? php $ host = www.google.com ;//要ping的地址，也可以是IP $ port = 80 ;//要ping的端口 $ num = 3 ; functionmicrotime_float() { list($usec,$s...