使用PHP cURL检查url是否存在

Question

目前我正在使用以下功能

function urlExist($url)
{
                $handle   = curl_init($url);
                if (false === $handle)
                {
                        return false;
                }
                curl_setopt($handle, CURLOPT_HEADER, false);
                curl_setopt($handle, CURLOPT_FAILONERROR, true);  // this works
                curl_setopt($handle, CURLOPT_HTTPHEADER, Array("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.15) Gecko/20080623 Firefox/2.0.0.15") ); // request as if Firefox
                curl_setopt($handle, CURLOPT_NOBODY, true);
                curl_setopt($handle, CURLOPT_RETURNTRANSFER, false);
                $connectable = curl_exec($handle);
                ##print $connectable;
                curl_close($handle);
                return $connectable;
}

它适用于简单的URL,但不适用于重定向到另一个域的URL

Answer 1

你需要设置FOLLOWLOCATION:

curl_setopt($handle, CURLOPT_FOLLOWLOCATION, true);

但是,在此发布GET请求没有意义.简单的HEAD更轻,因为只传输标题.为此,请设置NOBODY为true:

curl_setopt($handle, CURLOPT_NOBODY, true);