在php使用curl时必须先在php.ini中开启extension=php_curl.dll前面的;去了才行,curl是php中一款内置的浏览器,它可以模仿用户浏览信息进行网站浏览,等下面来看一实例,代码如下:

1. function postpage($url)
2. {
3. $response = "";
4. $rd=rand(1,4);
5. $proxy='http://221.214.27.253:808';
6. if($rd==2) $proxy='http://222.77.14.56:8088';
7. if($rd==3) $proxy='http://202.98.123.126:8080';
8. if($rd==4) $proxy='http://60.14.97.38:8080';
9. if($url != "") {
10. $ch = curl_init($url);
11. curl_setopt($ch, curlopt_header, 0);
12. curl_setopt($ch, curlopt_returntransfer, true);
13. curl_setopt($ch, curlopt_proxy, $proxy);
14. $response = curl_exec($ch);
15. if(curl_errno($ch)) $response = "";
16. curl_close($ch);
17. }
18. return $response;
19. }

curl包括部份函数,如下所示:

1. curl_close — close a curl session
2. curl_copy_handle — copy a curl handle along with all of its preferences
3. curl_errno — return the last error number
4. curl_error — return a string containing the last error for the current session
5. curl_exec — perform a curl session
6. curl_getinfo — get information regarding a specific transfer
7. curl_init — initialize a curl session
8. curl_multi_add_handle — add a normal curl handle to a curl multi handle
9. curl_multi_close — close a set of curl handles
10. curl_multi_exec — run the sub-connections of the current curl handle
11. curl_multi_getcontent — return the content of a curl handle if curlopt_returntransfer is set
12. curl_multi_info_read — get information about the current transfers
13. curl_multi_init — returns a new curl multi handle
14. curl_multi_remove_handle — remove a multi handle from a set of curl handles
15. curl_multi_select — wait for activity on any curl_multi connection
16. curl_setopt_array — set multiple options for a curl transfer
17. curl_setopt — set an option for a curl transfer
18. curl_version — gets curl version information