1. curl代碼如下

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   /**     * curl操作     * @param unknown_type $pURL     * @param unknown_type $pPostData     * @return unknown     */    public static function getURLContent($pURL, $pPostData = '') {        $ch = curl_init();        curl_setopt($ch, CURLOPT_URL, $pURL);        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 1); // 連接超時（秒）        curl_setopt($ch, CURLOPT_TIMEOUT, 3); // 執(zhí)行超時（秒）             if($pPostData) {            curl_setopt($ch, CURLOPT_POST, 1);            curl_setopt($ch, CURLOPT_POSTFIELDS, $pPostData);        }             $out_put = curl_exec($ch);        curl_close($ch);             return $out_put;    }

2. 理論是可以設(shè)置無限長的時間，但實際操作中不可能這樣做，可根據(jù)實際情況設(shè)置

   curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 1); // 連接超時（秒）
   curl_setopt($ch, CURLOPT_TIMEOUT, 3); // 執(zhí)行超時（秒）

global $g_handle;
if (empty($g_handle)) $ch = curl_init();
$options = array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FRESH_CONNECT => false,
CURLOPT_FORBID_REUSE => false,
CURLOPT_TIMEOUT => $timeout
);
curl_setopt_array($g_handle, $options);
$ret = curl_exec($g_handle);
return $ret;
}