php模拟get_headers函数的代码示例_PHP教程

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

03 function 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);

07 if($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='';

12 fwrite($fp,$out);

13 while(!feof($fp)){

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

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

16 break;

17 }

18 fclose($fp);

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

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

21 if($format){

22 foreach($var as $i){

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

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

25 }

26 return $v;

27 }else{

28 return $var;

29 }

30 }

31 }

32 }

33 echo '

';  <p></p>
<p>34 print_r(get_headers('http://www.gxlcms.com')); <br></p>
<p></p>
<p align="left"><span id="url" itemprop="url">http://www.bkjia.com/PHPjc/326962.html</span><span id="indexUrl" itemprop="indexUrl">www.bkjia.com</span><span id="isOriginal" itemprop="isOriginal">true</span><span id="isBasedOnUrl" itemprop="isBasedOnUrl">http://www.bkjia.com/PHPjc/326962.html</span><span id="genre" itemprop="genre">TechArticle</span><span id="description" itemprop="description"> 代码如下:</span></p><pre class="brush:php;toolbar:false layui-box layui-code-view layui-code-notepad"><ol class="layui-code-ol"><li>?php 02 if(!function_exists('get_headers')){ 03 function get_headers($url,$format=0){ 04 $url=parse_url($url); 05 $end="\r\n\r\n"; 06 $fp=fsockopen($url[...<p></p></li><li>                    </li></ol></pre>