PHP Socket network programming using curl

Phpsocket the use of network programming curl

Curl represents a client URL and is a command-line tool that specializes in handling URLs. This article describes curl opening a Web page and submitting data to it.

"Example": The Curl Library is used by PHP to pass data to the page

<? PHP       //Create curl transaction       $url = ' HTTP://localhost/service.php ';       $curl = Curl_init ($url);       If an error occurs, the direct run fails       curl_setopt ($curl, curlopt_failonerror,1);       Support redirect       curl_setopt ($curl, curlopt_followlocation,1);       Sets whether the processing result is stored in a variable option       curl_setopt ($curl, curlopt_returntransfer,1);       Set timeout time       curl_setopt ($curl, curlopt_timeout,5);       Set curl using the POST method       curl_setopt ($curl, curlopt_post,1);       Set post data       curl_setopt ($curl, Curlopt_postfields, ' name =foo&pass=bar&format=csv ');       $r to execute the transaction       = Curl_exec ($curl);       Close connection       curl_close ($curl);       Print result       print_r ($r);? >

Attention:

1. If the webpage has HTTP authentication protection, you can use the following configuration:

curl_setopt ($curl, curlopt_userpwd, ' Username:password ');

2. The Curl_getinfo () function returns an array that returns information about the transaction, which can only be called before closing the connection.

3. Curl can also transmit and receive cookies, process file uploads, work over SSL connections, and even process ftp files.

4. Get error codes and error messages only by using one of the Curl_errno () and Curl_error ().

PHP Socket network programming using curl