Bug #64251 [Nab]: preg_replace non-obvious behavior
Edit report at https://bugs.php.net/bug.php?id=64251&edit=1
ID: 64251
Updated by: laruence@php.net
Reported by: root at microsoft dot com
Summary: preg_replace non-obvious behavior
Status: Not a bug
Type: Bug
Package: Scripting Engine problem
Operating System: all
PHP Version: 5.4.11
Block user comment: N
Private report: N
New Comment:
return preg_replace('/\{(.+?)\}/',
$this->rand(explode('|', '\\1')),
$text);
is same as:
return preg_replace('/\{(.+?)\}/',
'\1',
$text);
for $this->rand(explode('|', '\\1')) will be called first and the result as
the
second argument to preg_replace.
so I see no problem here..
Previous Comments:
------------------------------------------------------------------------
[2013-02-20 15:15:18] johannes@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
My::rand() will be called before calling preg_replace. The function you are looking for is
preg_replace_callback.
------------------------------------------------------------------------
[2013-02-20 14:30:11] root at microsoft dot com
Description:
------------
Behavior of preg_replace is non-obvious, if second argument is function call.
Test script:
---------------
class My{
function prepare($text){
return preg_replace(
'/\{(.+?)\}/',
$this->rand(explode('|', '\\1')),
$text
);
}
private function rand(array $values){
return $values[rand(0, sizeof($values)-1)];
}
}
echo (new My)->prepare('i choose {ps3|games}');
Expected result:
----------------
i choose ps
or
i choose games
Actual result:
--------------
i choose ps3|games
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=64251&edit=1
Thread (3 messages)