proplem with <a href>

[rtkwar]

hi i add this code to my page
$user="alaa mohamed";
echo"<a href=1.php?owner=$user>";
but i get this:
1.php?owner=alaa
how i can make url
1.php?owner=alaa mohamed
?
any 1 can help me

[NogDog]

$user="alaa mohamed";
echo"<a href=1.php?owner=".urlencode($user).">";