Getting failed to open stream: HTTP request failed error with names with symboles

Why I got this error :

failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found

Code :

$Name = 'Teàst';
$result = file_get_contents('http://ift.tt/1DjDRBF' . $Name . );

But when I try echo $result; I got the link and its work fine. And when I try $Name = 'Teast'; (without "à" symbole) its work fine. Soo the problem is names with symboles (é è à ...). How to fix it please ?