ereg_replace(): this drives me nuts

From: knocte (knocte_at_NO-SPAM-PLEASE-hotmail.com)
Date: 12/31/03 

Date: Wed, 31 Dec 2003 17:22:56 +0100

Hello. I am testing this curious code and I don't understand yet why it
doesn't work with the 2nd case:

Case 1:

$number = "2,4";
$number = ereg_replace(",",".",$number);
echo $number; // displays "2.4"

Case 2:

$number = "2.4";
$number = ereg_replace(".",",",$number);
echo $number; // displays a strange thing!!!

Anyone know why ereg_replace() is not working? Thanks is advance, and
happy new year!

Regards,

        knocte

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