试用php的ping命令
使用PHP自动PING IP,校检网络连接是否正常!
- <?php
- $server = 'ping kalvin.cn -n 1';
- $last_line = exec($server, $arr);
- echo "$last_line"; //最后总结结果
- print_r($arr); //PING命令详细数据数组
- ?>
国外一位大师使用Sockets Ping,似乎效率更高:
PHP代码
- <?php
- // Checksum calculation function
- function icmpChecksum($data)
- {
- if (strlen($data)%2)
- $data .= "/x00";
- $bit = unpack('n*', $data);
- $sum = array_sum($bit);
- while ($sum >> 16)
- $sum = ($sum >> 16) + ($sum & 0xffff);
- return pack('n*', ~$sum);
- }
- // Making the package
- $type= "/x08";
- $code= "/x00";
- $checksum= "/x00/x00";
- $identifier = "/x00/x00";
- $seqNumber = "/x00/x00";
- $data= "Scarface";
- $package = $type.$code.$checksum.$identifier.$seqNumber.$data;
- $checksum = icmpChecksum($package); // Calculate the checksum
- $package = $type.$code.$checksum.$identifier.$seqNumber.$data;
- // And off to the sockets
- $socket = socket_create(AF_INET, SOCK_RAW, 1);
- socket_connect($socket, "www.google.com", null);
- // If you're using below PHP 5, see the manual for the microtime_float
- // function. Instead of just using the m
- // icrotime() function.
- $startTime = microtime(true);
- socket_send($socket, $package, strLen($package), 0);
- if (socket_read($socket, 255)) {
- echo round(microtime(true) - $startTime, 4) .' seconds';
- }
- socket_close($socket);
- ?>
转自http://blog.csdn.net/gumanren/article/details/5752394
posted on 2015-03-25 09:29 liuwenbohhh 阅读(1058) 评论(0) 编辑 收藏 举报