A few examples of Php curl

Using the PHP Curl Library, you can easily and effectively grab pages. You just need to run a script, then analyze the page you crawled, and then you can get the data you want in a program. Whether you want to take part of the data from a link, or take an XML file and import it into the database, the fear is simply to get the Web content, CURL is a powerful PHP library.

Curl Libraries in PHP (Client URL library function)

curl_close-closing a Curl session

curl_copy_handle-Copy all the contents and parameters of a Curl connection resource

curl_errno-returns a numeric number that contains the current session error information

curl_error-returns a string containing the current session error message

Curl_exec-performing a Curl session

Curl_getinfo-gets the information for a Curl connection resource handle

curl_init-initialization of a curl session

curl_multi_add_handle-Adding a separate curl handle resource to a curl batch session

curl_multi_close-closing a batch handle resource

curl_multi_exec-parsing a Curl batch handle

curl_multi_getcontent-returns the text stream of the obtained output

Curl_multi_info_read-Gets the related transfer information for the currently resolved curl

curl_multi_init-initializing a curl batch handle resource

curl_multi_remove_handle-removing a handle resource from the Curl batch handle resource

Curl_multi_select-get all the sockets associated with the CURL extension, which can and be "selected"

curl_setopt_array-set session parameters as an array for a curl

curl_setopt-setting session parameters for a curl

curl_version-getting the version information about Curl

The Curl_init () function Initializes a curl session, and the only parameter to the Curl_init () function is optional, representing a URL address.

The function of the curl_exec () function is to perform a curl session, and the only argument is the handle returned by the Curl_init () function.

The function of the Curl_close () function is to close a curl session, and the only argument is the handle returned by the Curl_init () function.

Example one: basic example

﹤?php//Initializes a CURL object $curl = Curl_init ();//sets the Urlcurl_setopt ($curl, Curlopt_url, ' http://www.cmx8.cn ') you need to crawl; Set Headercurl_setopt ($curl, Curlopt_header, 1);//Set the curl parameter to require the result to be saved to a string or output to the screen. curl_setopt ($curl, Curlopt_returntransfer, 1);//Run Curl, request page $data = curl_exec ($curl);//close URL request curl_close ($curl);// Displays the data obtained var_dump ($DATA);? >

Example two: Post data

sendsms.php, which can accept two form fields, one is the phone number, and the other is the text message content.

﹤?php$phonenumber = ' 13812345678 '; $message = ' This message is generated by curl and php '; $curlPost = ' pnumber= '.　UrlEncode ($phoneNumber).　' &message= '.　UrlEncode ($message). ' &submit=send '; $ch = Curl_init (); curl_setopt ($ch, Curlopt_url, ' http://www.lxvoip.com/sendSMS.php '); curl_ Setopt ($ch, Curlopt_header, 1); curl_setopt ($ch, Curlopt_returntransfer, 1); curl_setopt ($ch, Curlopt_post, 1); Curl_ Setopt ($ch, Curlopt_postfields, $curlPost); $data = Curl_exec (); Curl_close ($ch);? ﹥

Example three: Using a proxy server

﹤?php $ch = Curl_init (); curl_setopt ($ch, Curlopt_url, ' http://www.cmx8.cn '); curl_setopt ($ch, Curlopt_header, 1); Curl_　Setopt ($ch, Curlopt_returntransfer, 1); curl_setopt ($ch, Curlopt_httpproxytunnel, 1); curl_setopt ($ch, Curlopt_proxy, ' proxy.lxvoip.com:1080 '); curl_setopt ($ch, curlopt_proxyuserpwd, ' User:password '); $data = Curl_exec (); Curl_close ($ CH);? ﹥

Example FOUR: Analog login

Curl Simulation Login Discuz program, suitable for DZ7.0, will username changed to your user name, Userpass changed to your password on it.

<?php    /**   * Curl  Analog Login  discuz  programs     *  Forum Login function    */      !extension_loaded (' curl ') that has not been implemented to enable verification codes )  && die (' the curl extension is not loaded. ');         $discuz _url =  ' http://www.lxvoip.com ';//Forum Address       $login _url =  $discuz _url . ' /logging.php?action=login ';//login page address      $get _url =  $discuz _url . ' /my.php?item=threads ';  //my posts         $post _fields = array ();     //The following two items do not need to modify      $post _fields[' Loginfield '] =  ' username ';      $post _fields[' loginsubmit '] =  ' true ';     //user name and password must be filled in      $post _fields[' username '] =  ' lxvoip ';     $post _fields[' pAssword '] =  ' 88888888 ';     //security Questions      $post _fields[' QuestionID '] = 0;     $post _fields[' answer '] =  ';     //@todo Verification Code      $post _fields[' seccodeverify '] =  ';        //get form formhash     $ch  = curl_init ($login _url);     curl_setopt ($ch,  curlopt_header, 0);     curl_setopt ($ch,  curlopt_returntransfer, 1);     $contents  = curl_exec ($ch);     curl_close ($ch);     preg_match ('/<input\s*type= "hidden" \s*name= "Formhash" \s *value= "(. *?)" \s*\/>/i ',  $contents,  $matches)     if (!empty ($matches))  {          $formhash  =  $matches [1];    } else  {        die (' Not found the forumhash. ');     }       //post data, get cookie    $ Cookie_file = dirname (__file__)  .  '/cookie.txt ';     //$cookie _FILE  = tempnam ('/tmp ');     $ch  = curl_init ($login _url);     curl_setopt ($ch,  curlopt_header, 0);     curl_setopt ($ch,  CURLOPT_ returntransfer, 1);     curl_setopt ($ch,  curlopt_post, 1);     curl_setopt ($ch, curlopt_postfields,  $post _fields);     curl_setopt ($ch,  CURLOPT_COOKIEJAR,  $cookie _file)     curl_exec ($ch);     Curl_close ($ch);        //with the cookie above gets the content of the page that needs to be logged in before it can be viewed       $ch  = curl_init ($get _url);     cuRl_setopt ($ch,  curlopt_header, 0);     curl_setopt ($ch,  curlopt_ returntransfer, 0);     curl_setopt ($ch, curlopt_cookiefile,  $cookie _file);      $contents  = curl_exec ($ch),     curl_close ($ch);        var_dump ($contents);    ?>

A few examples of Php curl