#32404 [NEW]: Bug concerning use of preg_replace
From: thomas-meyer at uni dot de
Operating system: Windows XP
PHP version: 4.3.10
PHP Bug Type: PCRE related
Bug description: Bug concerning use of preg_replace
Description:
------------
There is a problem with PCRE in both PHP-versions (4.3.10 and 5.0.3)
When using preg_replace with:
$b = preg_replace("/(some)thing/", "\\1$replace", $a);
This works fine, as long as $replace does start with any character that is
NOT a number.
BUT: if $replace starts with a number (like "1abc") FIRST this string:
"\\11abc" will be created.
THEN it will try to replace \\11 by the 11th remembered position instead
of replacing \\1 with the 1st one.
This bug could lead to strange/unexpected results and should be fixed
soon.
Reproduce code:
---------------
<?php
$temp = '<input value="test">';
$a = 123;
echo "<P>Perl</P>\n";
$temp1 = preg_replace("/(<[^>]*)test([^>]*>)/Usi",
"\\1".$a."\\2",
$temp);
echo $temp1;
echo "<P>POSIX</P>\n";
$temp1 = eregi_replace("(<[^>]*)test([^>]*>)",
"\\1".$a."\\2", $temp);
echo $temp1;
?>
Expected result:
----------------
<P>Perl</P>
<input value="123">
<P>POSIX</P>
<input value="123">
Actual result:
--------------
<P>Perl</P>
23">
<P>POSIX</P>
<input value="123">
--
Edit bug report at http://bugs.php.net/?id=32404&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32404&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=32404&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=32404&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=32404&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=32404&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=32404&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=32404&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=32404&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=32404&r=support
Expected behavior: http://bugs.php.net/fix.php?id=32404&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=32404&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=32404&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=32404&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32404&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=32404&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=32404&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=32404&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=32404&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=32404&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=32404&r=mysqlcfg
Thread (3 messages)
- thomas-meyer at uni dot de