Don't use a regex if you don't have to

PHP has a rich set of string manipulation functions - use them!

BAD: <? $new = ereg_replace("-","_",$str); ?>
GOOD:<? $new = str_replace("-","_",$str); ?>
BAD: <? preg_match('/(\..*?)$/',$str,$reg);?>
GOOD:<? substr($str,strrpos($str,'.')); ?>

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