curl_exec

Perform a CURL session (PHP 4 >= 4.0.2, PHP 5)
mixed curl_exec ( resource ch )

This function should be called after you initialize a CURL session and all the options for the session are set. Its purpose is simply to execute the predefined CURL session (given by the ch).

例 393.  Initializing a new CURL session and fetching a webpage

<?php
// create a new curl resource
$ch = curl_init();

// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);

// grab URL and pass it to the browser
curl_exec($ch);

// close curl resource, and free up system resources
curl_close($ch);
?>
注意:

If you want to have the result returned instead of it being printed to the browser directly, use the CURLOPT_RETURNTRANSFER option of curl_setopt().