这篇文章主要介绍了php实现的ping端口函数,以实例形式较为详细的分析了PHP使用socket编程的技巧,需要的朋友可以参考下

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：

1. <?php
2. /*
3. * @author xujiajay
4. * @date 2010-10-7
5. * @function 可以ping端口的php函数
6. *
7. */
8. error_reporting(E_ERROR);
9. header("content-Type: text/html; charset=utf-8");
10. set_time_limit(120);
11. $host = isset($_POST['url']) ? chop(str_replace('http://','',$_POST['url'])) : 'www.baidu.com';
12. $port = isset($_POST['duankou']) ? chop($_POST['duankou']) : '80';
13. $num = 10;
14. function microtime_float()
15. {
16. list($usec, $sec) = explode(" ", microtime());
17. return ((float)$usec + (float)$sec);
18. }
19. function getsoft($host,$port)
20. {
21. $fp = @fsockopen($host,$port,&$errno,&$errstr,3);
22. if(!$fp) return 'unknown';
23. $get = "GET / HTTP/1.1\r\nHost:".$host."\r\nConnection: Close\r\n\r\n";
24. @fputs($fp,$get);
25. $data = '';
26. while ($fp && !feof($fp))
27. $data .= fread($fp, 1024);
28. @fclose($fp);
29. $array = explode("\n",$data);
30. $k = 2;
31. for($i = 0;$i < 20;$i++)
32. {
33. if(stristr($array[$i],'Server')){$k = $i; break;}
34. }
35. if(!stristr($array[$k],'Server')) return 'unknown';
36. else return str_replace('Server','服务器软件',$array[$k]);
37. }
38. function ping($host,$port)
39. {
40. $time_start = microtime_float();
41. $ip = gethostbyname($host);
42. $fp = @fsockopen($host,$port,&$errno,&$errstr,1);
43. if(!$fp) return 'Request timed out.'."\r\n";
44. $get = "GET / HTTP/1.1\r\nHost:".$host."\r\nConnection: Close\r\n\r\n";
45. @fputs($fp,$get);
46. @fclose($fp);
47. $time_end = microtime_float();
48. $time = $time_end - $time_start;
49. $time = ceil($time * 1000);
50. return 'Reply from '.$ip.': time='.$time.'ms';
51. }
52. if(isset($_POST['url']) && isset($_POST['duankou']))
53. {
54. echo '<font color="#FF0000">'.getsoft($host,$port).'</font>';
55. echo 'Pinging '.$host.' ['.gethostbyname($host).'] with Port:'.$port.' of data:'."\r\n";
56. ob_flush();
57. flush();
58. for($i = 0;$i < $num;$i++)
59. {
60. echo ping($host,$port);
61. ob_flush();
62. flush();
63. sleep(1);
64. }
65. }
66. ?>
67. <form method="POST">
68. 域名/IP：<input type="text" name="url" value="<?php echo $host;?>" size="50">
69. 端口：<input type="text" name="duankou" value="<?php echo $port;?>" size="10">
70. <input type="submit" value="ping">
71. </form>

希望本文所述对大家的PHP程序设计有所帮助。