From: michael dot moussa at gmail dot com
Operating system: Irrelevant
PHP version: 5.2.8
PHP Bug Type: Output Control
Bug description: str_replace factors previous replacements into process =
unexpected output
Description:
------------
When $search and $replace are arrays, str_replace factors previous
replacements into the process and produces unexpected input.
Reproduce code:
---------------
<?php
$search = array('A', 'B', 'C', 'D', 'E');
$replace = array('B', 'C', 'D', 'E', 'F');
echo str_replace($search, $replace, 'ABCDE');
?>
Expected result:
----------------
Each letter in the string 'ABCDE' should be replaced by the letter that
follows it in the alphabet, that is, A should be replaced with B, B should
be replaced with C, etc...
The expected result is 'BCDEF'
Actual result:
--------------
The actual result is 'FFFFF'. The documentation does not indicate that
$subject is continuously updated as the process moves along.
A more practical example:
echo str_replace(
array(" ", "&"),
array(" ", "&"),
"Hello & goodbye!"
);
This should replace "Hello & goodbye!" with
"Hello & goodbye!" but it actually results in
"Hello&nbsp&&nbspgoodbye!", as the original replacement of " "
with " " introduced an additional ampersand.
--
Edit bug report at http://bugs.php.net/?id=47232&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=47232&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=47232&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=47232&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=47232&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=47232&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=47232&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=47232&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=47232&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=47232&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=47232&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=47232&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=47232&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=47232&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=47232&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47232&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=47232&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=47232&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=47232&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=47232&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=47232&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=47232&r=mysqlcfg
