PHP uses curl_init to initiate an http request to simulate login

There are two types of http requests: common http request logon and https request logon, next I will give you a detailed introduction of using curl_init to implement http and h

There are two types of http requests: common http request logon and https request logon, next I will give you a detailed description of using curl_init to achieve http and https login.

Note: to use the curl_init function, you must enable this php extension.

1. open php. ini and enable extension = php_curl.dll.

2. check php. which Directory is the extension_dir value of ini? check whether php_curl.dll exists. if not, download php_curl.dll and copy libeay32.dll and ssleay32.dll in the php directory to c:/windows/system32.

The code for initiating an http request is as follows:

1. Function _ http_curl_post ($ url, $ data)
2. {
3. $ Ch = curl_init ();
4. Curl_setopt ($ ch, CURLOPT_URL, $ url );
5. Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, true );
6. Curl_setopt ($ ch, CURLOPT_FOLLOWLOCATION, true );
7. Curl_setopt ($ ch, CURLOPT_CONNECTTIMEOUT, 4 );
8. Curl_setopt ($ ch, CURLOPT_TIMEOUT, 4 );
10. If ($ data ){
11. Curl_setopt ($ ch, CURLOPT_POST, 1 );
12. Curl_setopt ($ ch, CURLOPT_POSTFIELDS, "value =". json_encode ($ data); // Convert request parameters to json format
13. }
14. Curl_setopt ($ ch, CURLOPT_HEADER, false );
15. $ String = curl_exec ($ ch );
16. Curl_close ($ ch );
17. Return $ string;
18. }

The code is as follows:

1. $ Params = array ();
2. $ Params ['id'] = 1
3. $ Params ['web _ name'] = 'good script ';
4. $ Params ['web _ url'] = 'http: // www.phpfensi.com /';
5. $ Params ['web _ miaoshu '] = 'script programming example ';
6. $ Data = _ curl_post ($ url, $ params );
7. $ Arr = json_decode ($ data );

In addition to http requests, there is also an https request. The last time I log on to Renren, the interface is the https url. Using the above function, an error is reported, if you encounter such a problem, you can refer to the following methods to solve it.

Https request example code:

1. Function _ https_curl_post ($ url, $ vars)
2. {
3. Foreach ($ vars as $ key => $ value)
4. {
5. $ Fields_string. = $ key. '='. $ value .'&';
6. }
7. $ Fields_string = substr ($ fields_string, 0, (strlen ($ fields_string)-1 ));
8. $ Ch = curl_init ();
9. Curl_setopt ($ ch, CURLOPT_URL, $ url );
10. Curl_setopt ($ ch, CURLOPT_SSL_VERIFYHOST, 2 );
11. Curl_setopt ($ ch, CURLOPT_SSL_VERIFYPEER, FALSE); // this line makes it work under https
12. Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1 );
13. Curl_setopt ($ ch, CURLOPT_POST, count ($ vars ));
14. Curl_setopt ($ ch, CURLOPT_POSTFIELDS, $ fields_string );
15. $ Data = curl_exec ($ ch );
16. Curl_close ($ ch );
18. If ($ data)
19. {
20. Return $ data;
21. }
22. Else
23. {
24. Return false;
25. }
26. }