From:             paj at pearfr dot org
Operating system: linux
PHP version:      4.3.1
PHP Bug Type:     PCRE related
Bug description:  weird errors using \\

$path='Hello\ World There is\ a\ dog';
$split=preg_split('/(?<!\\)\s+/',$path);
print_r($split);

returns:

Warning: Compilation failed: lookbehind assertion is not fixed length at
offset 9 in /home/paj/projects/pear/core/test.php on line 17
/home/paj/projects/pear/core/test.php(17) : Warning - Compilation failed:
lookbehind assertion is not fixed length at offset 9

$path='Hello\ World There is\ a\ dog';
$split=preg_split('/(?<!\\\)\s+/',$path);
print_r($split);

does not, but does not work as expected with others cases.

It seems to work with 4.3.0, a test url:
http://devel.akbkhome.com/regex.php
which runs 4.3.0, the 1st expression works correclty

pierre
-- 
Edit bug report at http://bugs.php.net/?id=22315&edit=1
-- 
Try a CVS snapshot:         http://bugs.php.net/fix.php?id=22315&r=trysnapshot
Fixed in CVS:               http://bugs.php.net/fix.php?id=22315&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=22315&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=22315&r=needtrace
Try newer version:          http://bugs.php.net/fix.php?id=22315&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=22315&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=22315&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=22315&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=22315&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=22315&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=22315&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=22315&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=22315&r=isapi
Install GNU Sed:            http://bugs.php.net/fix.php?id=22315&r=gnused

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