Arabic Language support

Hi,

Friend is PHP give arabic language support also when i am writing code and give some arabic value in any variabel like this

$var="&#1578;&#1585;&#1580;&#1605;&#1577; &#1575;&#1604;&#1606;&#1617;&#1589;&#1617;";

and when i save this file and open it again the script convert like this

$var="????????????";

whats wrong this ?

Can somebody help me what i do here?