php实现的ping端口函数实例

本文实例讲述了php实现的ping端口函数。分享给大家供大家参考。

具体实现代码如下：

<?php

/*

 * @author     xujiajay

 * @date       2010-10-7

 * @function   可以ping端口的php函数

 *

 */

    error_reporting(E_ERROR);

    header("content-Type: text/html; charset=utf-8");

    set_time_limit(120);

    $host = isset($_POST['url']) ? chop(str_replace('http://','',$_POST['url'])) : 'www.baidu.com';

    $port = isset($_POST['duankou']) ? chop($_POST['duankou']) : '80';

    $num  = 10;

    function microtime_float()

    {

            list($usec, $sec) = explode(" ", microtime());

            return ((float)$usec + (float)$sec);

    }

    function getsoft($host,$port)

    {

            $fp = @fsockopen($host,$port,&$errno,&$errstr,3);

            if(!$fp) return 'unknown';

            $get = "GET / HTTP/1.1\r\nHost:".$host."\r\nConnection: Close\r\n\r\n";

            @fputs($fp,$get);

            $data = '';

            while ($fp && !feof($fp))

            $data .= fread($fp, 1024);

            @fclose($fp);

            $array = explode("\n",$data);

            $k = 2;

            for($i = 0;$i < 20;$i++)

            {

                    if(stristr($array[$i],'Server')){$k = $i; break;}

            }

            if(!stristr($array[$k],'Server')) return 'unknown';

            else return str_replace('Server','服务器软件',$array[$k]);

    }

    function ping($host,$port)

    {

            $time_start = microtime_float();

            $ip = gethostbyname($host);

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

            if(!$fp) return 'Request timed out.'."\r\n";

            $get = "GET / HTTP/1.1\r\nHost:".$host."\r\nConnection: Close\r\n\r\n";

            @fputs($fp,$get);

            @fclose($fp);

            $time_end = microtime_float();

            $time = $time_end - $time_start;

            $time = ceil($time * 1000);

            return 'Reply from '.$ip.': time='.$time.'ms';

    }

    if(isset($_POST['url']) && isset($_POST['duankou']))

    {

            echo '<font color="#FF0000">'.getsoft($host,$port).'</font>';

            echo 'Pinging '.$host.' ['.gethostbyname($host).'] with Port:'.$port.' of data:'."\r\n";

            ob_flush();

            flush();

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

            {

                    echo ping($host,$port);

                    ob_flush();

                    flush();

                    sleep(1);

            }

    }

?>

<form method="POST">

域名/IP：<input type="text" name="url" value="<?php echo $host;?>" size="50"> 

端口：<input type="text" name="duankou" value="<?php echo $port;?>" size="10"> 

<input type="submit" value="ping">

</form>

希望本文所述对大家的PHP程序设计有所帮助。