Whether you want to take part of the data from a link, or take an XML file and import it into a database, it's a simple way to get the Web content, CURL is a powerful PHP library.
Curl function library in PHP (Client URL library function)
Curl_close-closes a Curl session
curl_copy_handle-copies all the contents and parameters of a Curl connection resource
curl_errno-returns a numeric number containing the current session error message
curl_error-returns a string containing the current session error message
curl_exec-executes a Curl session
Curl_getinfo-get information on a Curl connection resource handle
curl_init-initialization of a curl session
curl_multi_add_handle-Add a separate curl handle resource to a curl batch session
Curl_multi_close-closes a batch handle resource
curl_multi_exec-resolves a curl batch handle
curl_multi_getcontent-returns the text stream of the obtained output
Curl_multi_info_read-gets the relevant transport information of the currently resolved curl
curl_multi_init-initialization of a curl batch handle resource
curl_multi_remove_handle-removes a handle resource from a curl batch handle resource
Curl_multi_select-get the sockets associated with the curl extension, which can then to be "selected"
curl_setopt_array-sets the session parameters as an array for a curl
Curl_setopt-set session parameters for a curl
curl_version-Get Curl-related version information
The Curl_init () function Initializes a curl session, and the only parameter to the Curl_init () function is optional, representing a URL address.
The Curl_exec () function is to execute a curl session, the only argument is the handle returned by the Curl_init () function.
The role of the Curl_close () function is to close a curl session, with the only argument being a handle returned by the Curl_init () function.
Example one: basic example
Basic examples
Copy Code code as follows:
<?php
Initializes a CURL object
$curl = Curl_init ();
Set the URL you want to crawl
curl_setopt ($curl, Curlopt_url, ' http://www.cmx8.cn ');
Set Header
curl_setopt ($curl, Curlopt_header, 1);
Sets the curl parameter to require that the results be saved to the string or to the screen.
curl_setopt ($curl, Curlopt_returntransfer, 1);
Run Curl, request Web page
$data = curl_exec ($curl);
Close URL Request
Curl_close ($curl);
Show the data you get
Var_dump ($data);
?>
Example two: Post data
sendsms.php, which can accept two form fields, one is the telephone number, one is the text message content.
Post data
Copy Code code as follows:
<?php
$phoneNumber = ' 13812345678 ';
$message = ' This 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
Using a proxy server
Copy Code code as follows:
<?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 Analog Login Discuz program, suitable for DZ7.0, the username will be changed to your username, Userpass changed to your password on it.
Curl Analog Login Discuz Program
Copy Code code as follows:
<?php
!extension_loaded (' curl ') && 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 be modified
$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, getting cookies
$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);
Take the cookie above and get the content of the page that you need to log in to view
$ch = Curl_init ($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);