note 54457 added to function.eregi

Can anyone tell me / give me a link to somewhere that tells me how to use all the different characters in the eregi function? I don't have a clue what any of them mean. ---- Manual Page -- http://www.php.net/manual/en/function.eregi.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+54457 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+54457&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+54457&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+54457&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+54457&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+54457&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+54457&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+54457&report=yes Search -- http://master.php.net/manage/user-notes.php