Php CURL allows you to simulate logon and collect data

In php, we use a simple collection method (for example, file_get_contents). However, if we want to simulate a login user and collect and use it, we cannot, we can use the CURL function to simulate logon and collect data.

Here is a bit. By default, PHP's CURL function is not enabled, so you need to enable this function on your own. remove the ";" before extension = php_curl.dll in ini !!!
Well, let me talk about the program last night. Although it was not successful at last, I still learned something.
 

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$ Login = "http://www.phpyu.com/index.php? Action = login "; $ Post_file = "user = ×× & pw = ×× "; $ Cookie_file = tempnam ('./temp', 'cooker ');

///// Create a temporary file with a unique file name. If yes, the function returns a new temporary file name. If it fails, false is returned.

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$ Ch = curl_init ($ login_url); //// initialize a CURL object Curl_setopt ($ ch, CURLOPT_HEADER, 0 );

// If you want to include a header in the output, set this option to a non-zero value.

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Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1); // The setting is not output on the browser. Curl_setopt ($ ch, CURLOPT_POST, 1 );

///// If you want PHP to create a regular http post, set this option to a non-zero value. This POST is a common application/x-www-from-urlencoded type, most of which are used by HTML forms.

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Curl_setopt ($ ch, CURLOPT_POSTFIELDS, $ post_file); // transmits a string of all data for the HTTP "POST" operation. Curl_setopt ($ ch, CURLOPT_COOKIEJAR, $ cookie_file); // Save the returned cookie information in the $ cookie_jar file. Curl_exec ($ ch); // Execute Curl_close ($ ch); // close

The above process has been completed to simulate Logon
 

The following is to enter the page with permissions. Remember that you have logged on now. You should save the cookie of the logon credential.

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$ Url = "http://www.phpyu.com/admin/×× "; $ Ch = curl_init ($ url ); Curl_setopt ($ ch, CURLOPT_HEADER, 0 ); Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 0 );

//// Display this page in a browser. Pay special attention to this page !! If you display it in a browser, the $ contents below will become a boolean type true.

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Curl_setopt ($ ch, CURLOPT_COOKIEFILE, $ cookie_file ); $ Contents = curl_exec ($ ch );

Example 2

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<? Php $ Cookie_path = './'; // you can specify the cookie storage path. // ----- Log on to the form data to be submitted --------------- $ Vars ['username'] = 'zhang san '; $ Vars ['pwd'] = '20140901 '; //------------------------------------- $ Method_post = true; // The submitted url (the absolute address of the action in the form) $ Url = 'HTTP: // *****. com/login '; //---------------------------- $ Ch = curl_init (); $ Params [CURLOPT_URL] = $ url; // request url $ Params [CURLOPT_HEADER] = true; // whether to return response header information $ Params [CURLOPT_RETURNTRANSFER] = true; // whether to return the result $ Params [CURLOPT_FOLLOWLOCATION] = true; // whether to redirect $ Params [CURLOPT_USERAGENT] = 'mozilla/5.0 (Windows NT 5.1; rv: 9.0.1) Gecko/20100101 Firefox/9.0.1 '; $ Postfields = ''; Foreach ($ vars as $ key => $ value ){ $ Postfields. = urlencode ($ key). '='. urlencode ($ value ).'&'; } $ Params [CURLOPT_POST] = true; $ Params [CURLOPT_POSTFIELDS] = $ postfields; // Determine whether a cookie exists. If yes, use it directly. If (isset ($ _ COOKIE ['cookie _ jar']) & ($ _ COOKIE ['cookie _ jar'] | is_file ($ _ cookie ['cookie _ jar']) { $ Params [CURLOPT_COOKIEFILE] = $ _ COOKIE ['cookie _ jar']; // determine the cookie here } Else { $ Cookie_jar = tempnam ($ cookie_path, 'cooke'); // generate a cookie file $ Params [CURLOPT_COOKIEJAR] = $ cookie_jar; // write cookie Information Setcookie ('cookie _ jar', $ cookie_jar); // Save the cookie Path } Curl_setopt_array ($ ch, $ params); // you can specify the curl parameter. $ Content = curl_exec ($ ch); // Execute Echo' '; Echo $ content; // output the logon result /* // --------- Request another address again after successful logon. If there are multiple addresses, You can execute it cyclically --------- Echo' -------------------------------------------------------------------------------- '; $ Nexturl = 'HTTP: // *****. com/test '; $ Params [CURLOPT_URL] = $ nexturl; $ Params [CURLOPT_POSTFIELDS] = ''; Curl_setopt_array ($ ch, $ params); // you can specify the curl parameter. $ Content = curl_exec ($ ch); // Execute Echo $ content; // output request results //------------------------------------------------- */ Curl_close ($ ch); // close the connection ?>

Note: if you cannot request an https site, it may be because the certificate or domain name cannot be verified. You only need to add the following two items before curl_setopt_array:

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$ Params [CURLOPT_SSL_VERIFYPEER] = false; $ Params [CURLOPT_SSL_VERIFYHOST] = false;