[Phplib-trackers] [ phplib-Bugs-550783 ] Malformed $QUERY_STRING with PHP 4.2.0

[<no...@so...>]

Bugs item #550783, was opened at 2002-04-30 16:10
You can respond by visiting: 
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Category: Session
Group: 7.4pre1
Status: Open
Resolution: None
>Priority: 6
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: Malformed $QUERY_STRING with PHP 4.2.0

Initial Comment:
I'm using PHPLib 7.4pre1 with PHP 4.2.0(maybe latest
version at now).

$sess->purl() method in login.ihtml outputs the extra
string `?\1' when session id is only included in
$QUERY_STRING.

For example, the following code is written.

  .../login.php?\1

This problem is caused by ereg_replace function in PHP
4.2.0. In 4.1.2, \digit(back-references) is replaced
to "" when referenced string is "", but in 4.2.0
replaced to `\digit'.

The following is the part of get_id() method in Session
class.

// Remove session ID info from QUERY String - it is in
cookie
if ( isset($QUERY_STRING) && ("" != $QUERY_STRING) ) {
  $QUERY_STRING = ereg_replace(
"(^|&)".quotemeta(urlencode($this->name))."=".$id."(&|$)",
"\1", $QUERY_STRING);
}
Finally, I added the the following code fragment:

  $QUERY_STRING = ereg_replace("\\1", "",        
$QUERY_STRING);

Of cource, this is not a bug. I think that this is a
effet of multi-byte extension to regexp feature in PHP.



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