php执行ping

//通过在URL中输入域名,ping的次数例如 ：http://localhost:8080/demo2/ping.php?domain=www.google.com&num=3

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>php实现ping功能</title>

</head>

<body>

<?php

class CNetPing

{

public $icmp_socket;

public $request;

// public $request_len;

// var $reply;

public $errstr;

// public $time; //建立连接到发送包得到响应的时间

public $timer_start_time; //开始发送请求包的时间

public $lost_package=0;//默认丢失的包的数量为0

public $recv_package=0;//默认接受到的包的数量为0

public $times=array();

function CNetPing()

{

$this->icmp_socket = socket_create(AF_INET, SOCK_RAW, 1);

//echo " $this->icmp_socket";

socket_set_block($this->icmp_socket);

}

//如果调用时不带可选参数，本函数以 "msec sec" 的格式返回一个字符串，其中 sec 是自 Unix 纪元（0:00:00 January 1, 1970 GMT）起到现在的秒数，msec 是微秒部分。

//字符串的两部分都是以秒为单位返回的

function start_time()

{

$this->timer_start_time = microtime();//microtime() 函数返回当前 Unix 时间戳和微秒数。

//echo "$this->timer_start_time";

}

function get_time($percision = 2)

{

// format start time

list($start_usec, $start_sec) = explode(" ", $this->timer_start_time);//explode() 函数把字符串分割为数组

$start_time = ((float)$start_usec + (float)$start_sec);

// get and format end time

list($end_usec, $end_sec) = explode(" ", microtime());

$end_time = ((float)$end_usec + (float)$end_sec);

$total_time = $end_time - $start_time;

return number_format(1000*$total_time, $percision);

}

/**

* @param $dst_addr

* @param int $timeout

* @param int $percision

* @return bool|string

*/

function ping($dst_addr,$num, $timeout = 5, $percision = 3)

{

// lets catch dumb people

if ((int)$timeout <= 0) $timeout = 5;

if ((int)$percision <= 0) $percision = 3;

/* create the socket, the last '1' denotes ICMP */

// $socket = socket_create(AF_INET, SOCK_RAW, 1);

/* set socket receive timeout to 1 second */

//socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array("sec" => $timeout, "usec" => 0));

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

socket_set_option($this->icmp_socket, SOL_SOCKET, SO_RCVTIMEO, array("sec" => $timeout, "usec" => 0));

/* connect to socket */

if (socket_connect($this->icmp_socket, $dst_addr, null)) {

echo "socket_connect连接 $dst_addr.成功<br>";

} else {

$this->errstr = "Cannot connect to $dst_addr";

return FALSE;

}

/* 创建一个发送包*/

$this->request = "\x08\x00\x19\x2f\x00\x00\x00\x00\x70\x69\x6e\x67";

/* record start time */

$this->start_time();

socket_send($this->icmp_socket, $this->request, strlen($this->request), 0);

//socket_send($this->icmp_socket,$package,strlen($package),0);

if (@socket_read($this->icmp_socket, 255)) {

//$this->time = $this->get_time($percision);

$this->times[$i]=$this->get_time($percision);

$this->recv_package++;

//return $this->time;

} else {

$this->lost_package++;

$this->errstr = "Timed out";

}

socket_close(icmp_socket);

}

}

}

$domain=$_GET['domain'];

$num=$_GET['num'];

echo "域名：".$domain."<br>";

echo "次数：".$num."<br>";

$percision=3;

$address = gethostbyname($domain);

$ping=new CNetPing();

$ping->ping($address, $num, $percision);

echo"已接受的数据包个数为：$ping->recv_package<br>";

echo"丢失的数据包个数为：$ping->lost_package<br>";

if($ping->recv_package==0){

echo "$ping->errstr";

}else{

sort($ping->times);//系统排序函数。升序函数（从小到大排序）

echo "最短时间为:".$ping->times[0]."ms 最长时间为：".$ping->times[$num-1]."ms 平均时间为："

.number_format((array_sum($ping->times)/$num),$percision)."ms<br>";//array_sum()计算数组中所有值的和

}

?>

</body>

</html>