Description:
------------
I found ereg function in php 4.3.8 doesn't match some expression that I think it must be matched.

Look at example..

ereg('[\=\-]', 'a-b') = match
ereg('[\-\=]', 'a-b') = unmatch

I think 2 expressions is the same. But result is difference.

Reproduce code:
---------------
<?
echo "ereg('[\=\-]', 'a-b') = " ;
if (ereg('[\=\-]', 'a-b'))
	echo "match";
else 
	echo "unmatch";
echo "<br>";

echo "ereg('[\-\=]', 'a-b') = " ;
if (ereg('[\-\=]', 'a-b'))
	echo "match";
else 
	echo "unmatch";
echo "<br>";
?>

Expected result:
----------------
ereg('[\=\-]', 'a-b') = match
ereg('[\-\=]', 'a-b') = match

Actual result:
--------------
ereg('[\=\-]', 'a-b') = match
ereg('[\-\=]', 'a-b') = unmatch