實現Ping功能的PHP類 - HTTP Ping Class
這是一個簡單的PHP腳本，可用于Ping網站是否可用。
<?php/*
- http_ping.class.php *
- *
- (c) 2008-2011 Wolf Software Limited <support@wolf-software.com> *
- All Rights Reserved. *
- *
- This program is free software: you can redistribute it and/or modify *
- it under the terms of the GNU General Public License as published by *
- the Free Software Foundation, either version 3 of the License, or *
- (at your option) any later version. *
- *
- This program is distributed in the hope that it will be useful, *
- but WITHOUT ANY WARRANTY; without even the implied warranty of *
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- GNU General Public License for more details. *
- *
- You should have received a copy of the GNU General Public License *
- along with this program. If not, see <http://www.gnu.org/licenses/>. *
- **/
class Http_Ping { private $class_name = "Http Ping"; private $class_version = "1.1.0"; private $class_author = "Wolf Software"; private $class_source = "http://www.wolf-software.com/downloads/php-classes/networking-classes/http-ping-class/";
private $error = null;
private $error_codes = Array( Array('code' => 100, 'message' => 'Continue'), Array('code' => 101, 'message' => 'Switching Protocols'), Array('code' => 200, 'message' => 'OK'), Array('code' => 201, 'message' => 'Created'), Array('code' => 202, 'message' => 'Accepted'), Array('code' => 203, 'message' => 'Non-Authoritative Information'), Array('code' => 204, 'message' => 'No Content'), Array('code' => 205, 'message' => 'Reset Content'), Array('code' => 206, 'message' => 'Partial Content'), Array('code' => 300, 'message' => 'Multiple Choices'), Array('code' => 301, 'message' => 'Moved Permanently'), Array('code' => 302, 'message' => 'Found'), Array('code' => 303, 'message' => 'See Other'), Array('code' => 304, 'message' => 'Not Modified'), Array('code' => 305, 'message' => 'Use Proxy'), Array('code' => 306, 'message' => '(Unused)'), Array('code' => 307, 'message' => 'Temporary Redirect'), Array('code' => 400, 'message' => 'Bad Request'), Array('code' => 401, 'message' => 'Unauthorized'), Array('code' => 402, 'message' => 'Payment Required'), Array('code' => 403, 'message' => 'Forbidden'), Array('code' => 404, 'message' => 'Not Found'), Array('code' => 405, 'message' => 'Method Not Allowed'), Array('code' => 406, 'message' => 'Not Acceptable'), Array('code' => 407, 'message' => 'Proxy Authentication Required'), Array('code' => 408, 'message' => 'Request Timeout'), Array('code' => 409, 'message' => 'Conflict'), Array('code' => 410, 'message' => 'Gone'), Array('code' => 411, 'message' => 'Length Required'), Array('code' => 412, 'message' => 'Precondition Failed'), Array('code' => 413, 'message' => 'Request Entity Too Large'), Array('code' => 414, 'message' => 'Request-URI Too Long'), Array('code' => 415, 'message' => 'Unsupported Media Type'), Array('code' => 416, 'message' => 'Requested Range Not Satisfiable'), Array('code' => 417, 'message' => 'Expectation Failed'), Array('code' => 500, 'message' => 'Internal Server Error'), Array('code' => 501, 'message' => 'Not Implemented'), Array('code' => 502, 'message' => 'Bad Gateway'), Array('code' => 503, 'message' => 'Service Unavailable'), Array('code' => 504, 'message' => 'Gateway Timeout'), Array('code' => 505, 'message' => 'HTTP Version Not Supported'), );
public function class_name() { return $this->class_name; }
public function class_version() { return $this->class_version; }
public function class_author() { return $this->class_author; }
public function class_source() { return $this->class_source; }
public function __construct() { }
public function ping($url, $port = 80, $ssl = false, $user_agent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)') { $this->reset_error(); clearstatcache();
if (substr($url, 0, 4) != "http")
{
if ($ssl)
{
$url = "https://" . $url;
}
else
{
$url = "http://" . $url;
}
}
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_PORT, $port);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
curl_setopt($ch, CURLOPT_FAILONERROR, 1);
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
curl_setopt($ch, CURLOPT_FRESH_CONNECT, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$execute = curl_exec($ch);
$http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if (($http_status >= 200) && ($http_status < 400))
{
$total_time = curl_getinfo($ch, CURLINFO_TOTAL_TIME);
$ret = $total_time;
}
else
{
if ($http_status == 0)
{
$msg = curl_error($ch);
$this->set_error($msg);
$ret = false;
}
else
{
foreach ($this->error_codes as $error)
{
if ($error['code'] == $http_status)
{
$this->set_error($error['message']);
$ret = false;
break;
}
}
}
}
curl_close($ch);
return $ret;
}
private function reset_error() { $this->error = null; }
private function set_error($msg) { $this->error = $msg; }
public function get_error() { return $this->error; } }
?></pre>使用方法：
<?phprequire_once 'http_ping.class.php'; $h = new Http_Ping();
echo "Class Name: " . $h->class_name() . "<br>"; echo "Class Version: " . $h->class_version() . "<br>"; echo "Class Author: " . $h->class_author() . "<br>"; echo "Class Source: " . $h->class_source() . "<br><br>";
$hosts = Array( Array('name' => 'Wolf Software', 'url' => 'www.wolf-software.com'), Array('name' => 'BBC', 'url' => 'www.bbc.co.uk'), Array('name' => 'Google', 'url' => 'www.google.com'), Array('name' => 'Intentional Failure', 'url' => 'www.thiswontworkatall.com'), );
foreach ($hosts as $host) { echo "Pinging Host: " . $host['name'] . " = "; if (($msg = $h->ping($host['url'])) == false) { echo $h->get_error() . "<BR>"; } else { echo "$msg<BR>"; } }
?></pre>