6.5、curl获取301页面的内容

$ghurl = isset($_GET['id']) ? $_GET['id']:'http://www.baidu.com/';
    // php 获取 
    function getContents($url){
        $header = array("Referer: http://www.baidu.com/");
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        curl_setopt($ch, CURLOPT_HTTPHEADER,$header);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1); //是否抓取跳转后的页面 
        ob_start();
        curl_exec($ch);
        $contents = ob_get_contents();
        ob_end_clean();
        curl_close($ch);

        return $contents;
    }
$contents = getContents($ghurl);
echo $contents;