$url = "dein_server";  
 

    $fp = fsockopen($url, 80, $errno, $errstr, 30);  
    if(!$fp)  
    {  
        echo("$errstr ($errno)
\n");  
    }

function urlfind($link){
    if($link) {
        $file = @fopen ($link, "r");
    }
    if($file){
        return true;
        fclose($file);
    } else {
        return false;
        fclose($file);
    }
}