Bug #71036 [NEW]: When using /x modifier, a "/" in a regex comment is seen as a regex delimiter

From: Date: Sat, 05 Dec 2015 01:26:33 +0000
Subject: Bug #71036 [NEW]: When using /x modifier, a "/" in a regex comment is seen as a regex delimiter
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-197602@lists.php.net to get a copy of this message
From:             cmanley at xs4all dot nl
Operating system: Debian 8.2
PHP version:      5.6.16
Package:          PCRE related
Bug Type:         Bug
Bug description:When using /x modifier, a "/" in a regex comment is seen as a regex
delimiter

Description:
------------
The documentation for the x (PCRE_EXTENDED) modifier states:
"characters between an unescaped # outside a character class and the
next newline character, inclusive, are also ignored"

Yet this is not the case in my test example:
The "/" in the regex comment "# firstname/alias" is seen as a regex
delimiter.

Test script:
---------------
<?php
$fullname = 'Joe Blow';
if (preg_match('/^
	(\S+)	# firstname/alias
	\s+
	\S+	# surname
$/x', $fullname, $matches)) {
	print $matches[1] . "\n";
}


Expected result:
----------------
Joe

Actual result:
--------------
PHP Warning:  preg_match(): Unknown modifier 'a' in /home/cmanley/t.php
on line 8

-- 
Edit bug report at https://bugs.php.net/bug.php?id=71036&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=71036&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=71036&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=71036&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=71036&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=71036&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=71036&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=71036&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=71036&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=71036&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=71036&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=71036&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=71036&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=71036&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71036&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=71036&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=71036&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=71036&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=71036&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=71036&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=71036&r=mysqlcfg



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