Possible Duplicate:
Reference assignment operator in php =&

$var2 = $var1;
$var2 = &$var1;

Örnek:

$GLOBALS['a']=1;


function test()
{
    global $a;
    $local=2;
    $a=&$local;
}


test();

echo $a;

Neden hala 1 $ a?