PHP 实现的网页代理

1. if ( !isset($_REQUEST["url"]) ) exit;
3. $u = $_REQUEST["url"];
4. if (substr($u, -0, 7) != "http://") exit;
6. echo file_get_contents( $u );
8. /*
9. function getPage($url, $referer, $timeout, $header=true){
10. if(!isset($timeout)) $timeout=30;
11. $curl = curl_init();
12. if(strstr($referer,"://")){
13. curl_setopt ($curl, CURLOPT_REFERER, $referer);
14. }
15. curl_setopt ($curl, CURLOPT_URL, $url);
16. curl_setopt ($curl, CURLOPT_TIMEOUT, $timeout);
17. curl_setopt ($curl, CURLOPT_USERAGENT, sprintf("Mozilla/%d.0",rand(4,5)));
18. curl_setopt ($curl, CURLOPT_HEADER, (int)$header);
19. curl_setopt ($curl, CURLOPT_RETURNTRANSFER, 1);
20. curl_setopt ($curl, CURLOPT_SSL_VERIFYPEER, 0);
21. $html = curl_exec ($curl);
22. curl_close ($curl);
23. return $html;
24. }
26. echo getPage( $u, "http://www.websitename.com", "20", false );
27. */
28. ?>

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PHP