#41077 [Opn->Bgs]: Order may matter between brackets

ID: 41077 Updated by: johannes@php.net Reported By: aeolianmeson at blitzeclipse dot com -Status: Open +Status: Bogus Bug Type: *Regular Expressions Operating System: 2000 Server PHP Version: 5.2.1 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Read about strings with double quotes. The \ won't be seen by the regexp engine. Previous Comments: ------------------------------------------------------------------------ [2007-04-13 15:07:41] aeolianmeson at blitzeclipse dot com Description: ------------ I needed to add a dash to a character class, so I appended it to the present character class definition. It turns out that it wouldn't accept unless I moved it to the middle. Reproduce code: --------------- // This works. // $reg = "^[[:alnum:]_\.\-]+@[[:alnum:]_\.\-]+$"; // This does not work. The only difference // is the order of the last two accepted // characters in the first character class. $reg = "^[a-z0-9_\-\.]+@[[:alnum:]_\.\-]+$"; var_dump(ereg($reg, 'ab-c@def.com')); Expected result: ---------------- Does match. Actual result: -------------- Does not match. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=41077&edit=1