php CURLOPT错误Warning: curl_setopt() [function.curl-setopt]:.

如果当你在php中运行 CURLOPT_FOLLOWLOCATION 然后得到php提示错误信息为:
Warning: curl_setopt() [function.curl-setopt]: CURLOPT_FOLLOWLOCATION cannot be activated when in safe_mode or an open_basedir is set…

错误中提到两个关键safe_mode和 open_basedir,如果你是虚拟主机的没有设置APPCHE的权限是不能通过修改服务器配置来解决问题的,一般来说,服务器配置safe_mode都为off,然后为了一些安全对用户有一些限制,通过设置open_basedir来限制虚拟主机用户的PHP执行文件夹,因此当你使用CURLOPT_FOLLOWLOCATION (php curl函数,深层抓取数据)的时候,一旦有301转向等就会出现文中提到的错误信息.

在查了相关资料后,很快找到了解决办法,http://www.php.net/manual/en/function.curl-setopt.php,这些方法都在php官方帮助里有.

具体做法是在curl语句用不使用curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true),在php函数中自定义一个函数,

代码如下

复制代码

function curl_redir_exec($ch,$debug="") { static $curl_loops = 0; static $curl_max_loops = 20; if ($curl_loops++ >= $curl_max_loops) { $curl_loops = 0; return FALSE; } curl_setopt($ch, CURLOPT_HEADER, true); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $data = curl_exec($ch); $debbbb = $data; list($header, $data) = explode("＼n＼n", $data, 2); $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); if ($http_code == 301 || $http_code == 302) { $matches = array(); preg_match("/Location:(.*?)＼n/", $header, $matches); $url = @parse_url(trim(array_pop($matches))); //print_r($url); if (!$url) { //couldn"t process the url to redirect to $curl_loops = 0; return $data; } $last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL)); /*    if (!$url["scheme"]) $url["scheme"] = $last_url["scheme"]; if (!$url["host"]) $url["host"] = $last_url["host"]; if (!$url["path"]) $url["path"] = $last_url["path"];*/ $new_url = $url["scheme"] . "://" . $url["host"] . $url["path"] . ($url["query"]?"?".$url["query"]:""); curl_setopt($ch, CURLOPT_URL, $new_url); //    debug("Redirecting to", $new_url); return curl_redir_exec($ch); } else { $curl_loops=0; return $debbbb; } }

函数定义好后,curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true)这条语句替换为curl_redir_exec($ch)

这样以后,我想你的PHP文件应该不会提示错误了,关于这段代码,在提供PHP官方连接用可以找到.

php官方的代码如下

//safe 模式不能curl的函数

    function curl_redir_exec($ch)
    {
        static $curl_loops = 0;
        static $curl_max_loops = 20;
        if ($curl_loops++ >= $curl_max_loops)
        {
            $curl_loops = 0;
            return FALSE;
        }
        curl_setopt($ch, CURLOPT_HEADER, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $data = curl_exec($ch);
        list($header, $data) = explode("

", $data, 2);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        if ($http_code == 301 || $http_code == 302)
        {
            $matches = array();
            preg_match("/Location:(.*?)
/", $header, $matches);
            $url = @parse_url(trim(array_pop($matches)));
            if (!$url)
            {
                //couldn"t process the url to redirect to
                $curl_loops = 0;
                return $data;
            }
            $last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL));
            if (!$url["scheme"])
                $url["scheme"] = $last_url["scheme"];
            if (!$url["host"])
                $url["host"] = $last_url["host"];
            if (!$url["path"])
                $url["path"] = $last_url["path"];
            $new_url = $url["scheme"] . "://" . $url["host"] . $url["path"] . ($url["query"]?"?".$url["query"]:"");
            curl_setopt($ch, CURLOPT_URL, $new_url);
            debug("Redirecting to", $new_url);
            return curl_redir_exec($ch);
        } else {
            $curl_loops=0;
            return $data;
        }
    }
//end