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# curl_exec

(PHP 4 >= 4.0.2, PHP 5)

curl_exec -- Perform a CURL session

## Description

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).

例子 1. 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: 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().

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