ID:               23903
 Updated by:       [EMAIL PROTECTED]
 Reported By:      mnilsson at bowesnet dot com
 Status:           Open
 Bug Type:         *Regular Expressions
 Operating System: linux 2.4.18
 PHP Version:      4.3.2
 New Comment:

Smaller example:

  echo preg_replace ("/(.*)/", "http://\$1";, "abc"),"\n";

Output: http://abchttp://

This doesn't look correct to me.

However, your search pattern doesn't look very reasonable - the normal
way to prepend a string to another string is the "." operator:

  $bannerad_url = 'http://' . $_POST['bannerad_url'];




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

[2003-05-30 13:08:35] mnilsson at bowesnet dot com

PROBLEM: preg_replace does not return the proper value with 
a * in the regular expression.

INPUT: $_POST['bannerad_url'] = 'www.canoe.ca';

PROCESS CODE:
$_POST['bannerad_url'] = trim($_POST['bannerad_url']);

if (preg_match ("/^http:\/\/(.*)/i", 
$_POST['bannerad_url']) > 0)
        $bannerad_url = $_POST['bannerad_url'];
else
        $bannerad_url = preg_replace ("/(.*)/", "http://\$1";, 
$_POST['bannerad_url']);

OUTPUT: echo $bannerad_url; -------> http://
www.canoe.cahttp://


FIX:
INPUT: $_POST['bannerad_url'] = 'www.canoe.ca';

PROCESS CODE:
$_POST['bannerad_url'] = trim($_POST['bannerad_url']);

if (preg_match ("/^http:\/\/(.+)/i", 
$_POST['bannerad_url']) > 0)
        $bannerad_url = $_POST['bannerad_url'];
else
        $bannerad_url = preg_replace ("/(.+)/", "http://\$1";, 
$_POST['bannerad_url']);

OUTPUT: echo $bannerad_url; -------> http://www.canoe.ca

NOTES:
I was able to reproduce this several times. It seems to be 
related to the *, but replacing it with a + solves the 
problem. Thanks.

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


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