#17616 [Bgs->Ver]: backslash characters handled oddly in preg_replace

From: Date: Wed, 25 Sep 2002 14:35:09 +0000
Subject: #17616 [Bgs->Ver]: backslash characters handled oddly in preg_replace
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-20321@lists.php.net to get a copy of this message 
 ID:               17616
 Updated by:       andrei@php.net
 Reported By:      john43@temple.edu
-Status:           Bogus
+Status:           Verified
 Bug Type:         PCRE related
 Operating System: linux 2.4.14, pcre
 PHP Version:      4.3.0-dev
 New Comment:

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

In the first case the extension receives replacement string \\\ which
is basically \\, since last backslash doesn't quote anything. And in
the second case it's \\\\ which is interpolated into \\.


Previous Comments:
------------------------------------------------------------------------

[2002-09-25 09:33:23] andrei@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



------------------------------------------------------------------------

[2002-09-11 19:44:28] iliaa@php.net

updated version.

------------------------------------------------------------------------

[2002-06-05 18:17:27] john43@temple.edu

Below are two calls to preg_replace() with different replacement
strings. For some reason, they both return the same string.

$s = "A backslash: \\ ";
$s1 = preg_replace("/\\\\/", "\\\\\\",   $s);
$s2 = preg_replace("/\\\\/", "\\\\\\\\", $s);

echo "s : $s  \n";
echo "s1: $s1 \n";
echo "s2: $s2 \n";

------------------
Output:
s : A backslash: \   
s1: A backslash: \\  
s2: A backslash: \\  

------------------


My configuration:

'./configure' '--with-gnu-ld' '--with-apxs=/usr/local/apache/bin/apxs'
'--with-mysql=/usr/local/mysql' 


------------------------------------------------------------------------


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