php 模拟get_headers函数的代码示例

复制代码 代码如下:

<?php

02 if(!function_exists('get_headers')){

03function get_headers($url,$format=0){

04$url=parse_url($url);

05$end="/r/n/r/n";

06$fp=fsockopen($url['host'],(empty($url['port'])?80:$url['port']),$errno,$errstr,30);

07if($fp){

08$out="GET / HTTP/1.1/r/n";

09$out.="Host: ".$url['host']."/r/n";

10$out.="Connection: Close/r/n/r/n";

11$var='';

12fwrite($fp,$out);

13while(!feof($fp)){

14$var.=fgets($fp,1280);

15if(strpos($var,$end))

16break;

17}

18fclose($fp);

19$var=preg_replace("//r/n/r/n.*/$/",'',$var);

20$var=explode("/r/n",$var);

21if($format){

22foreach($var as $i){

23if(preg_match('/^([a-zA-Z -]+): +(.*)$/',$i,$parts))

24$v[$parts[1]]=$parts[2];

25}

26return $v;

27}else{

28return $var;

29}

30}

31}

32 }

33 echo '<pre>';

34 print_r(get_headers('http://www.vevb.com'));