ID: 35733
Updated by: [EMAIL PROTECTED]
Reported By: gerhard at tinned-software dot net
-Status: Open
+Status: Bogus
Bug Type: PCRE related
Operating System: WinXP/Linux
PHP Version: 5.1.1
New Comment:
If it worked in PHP 4 it's a bug there. Don't play around with GLOBALS
like that. It's expected behaviour to work unexpectedly.
Previous Comments:
------------------------------------------------------------------------
[2005-12-19 16:21:56] gerhard at tinned-software dot net
with preg_replace i only remove newlines from a string which contains
the content of the variable! $value contains the content of the
variable and is copied to $entry ... only $entry is changed not the
$value which is used to check if it is an array and which is aslo used
to call the function recursive!
foreach($array as $key => $value){
$entry = $value;
how can this damage the $GLOBALS??? ... and if this is not a bug, way
it is working with PHP4.x???
------------------------------------------------------------------------
[2005-12-19 15:12:47] [EMAIL PROTECTED]
$GLOBALS contains reference to itself.
In your code you're effectively converting all the elements to strings
with preg_replace(), so GLOBALS itself becomes string too.
Not a bug.
------------------------------------------------------------------------
[2005-12-19 15:01:19] gerhard at tinned-software dot net
Description:
------------
PHP 5 PCRE Bug!?
We have in our program a function to log all $GLOBALS variables. This
function
calls itself recursive to log all variables of a array and all its
sub-arrays.
This function is working fine in PHP 4.0.1 and up to 4.3.10 (the
highest of our
test configuration.)
Since PHP5 (different versions) it was not working anymore when you
call the function with $GLOBALS as
parameter. The logfile contained only one line ...
|-> GLOBALS = Array
After some hours i go it working by replacing the preg_replace()
function with
the ereg_replace() function.
The problem shows as follows:
After calling function preg_replace() the $GLOBALS array contails only
1 element
which is $GLOBALS. (i cheched it with count($GLOBALS);) after that the
check
is_array() is always returning "1" instead of true or false.
after replacing the ...
preg_replace("/\r*\n/", " ", $entry);
... with ...
ereg_replace("\n", " ", $entry);
ereg_replace("\r", " ", $entry);
... the function is working without problems. PHP must be configured
correctly
because this function preg_replace() is used very often in our program.
This
function is also workinf fine when called with any other array. Only
when
$GLOBALS is used to call this function it shows this behaviour.
We checked this behaviour with different PHP4.x (everything was
working) and some versions of PHP5 (on all the same problem - last
tested version 5.1.1). And also on different OS (Linux, MacOSX, WinXP,
Win2000).
Reproduce code:
---------------
<?php
/*****************************************************************************/
/* This file is part of Tinned-Mail.
*/
/*****************************************************************************/
array_log($GLOBALS);
function array_log($array, $level = 0){
// create level space
$level_space = "";
for($i=0; $i < $level; $i++){
$level_space .= " ";
}
// print array entries
foreach($array as $key => $value){
$entry = $value;
$entry = preg_replace("/\r*\n/", " ", $entry);
$entry2 = "$level_space|-> $key = $entry\n";
$FILE = fopen("array.log", "a");
fwrite($FILE, $entry2);
fclose($FILE);
echo is_array($value);
if(is_array($value)){
if($key == "GLOBALS"){ continue; }
array_log($value, $level + 1);
}
}
}
?>
Expected result:
----------------
Logfile with PHP 5.1.1:
|-> GLOBALS = Array
Logfile with 4.x.x (as it should look like):
|-> HTTP_ENV_VARS = Array
|-> DBROOT = /dev/null
|-> BOOT_FILE = /boot/vmlinuz
|-> HOSTNAME = mail
|-> CONSOLE = /dev/console
|-> LD_LIBRARY_PATH = :/lib
.
.
.
|-> HTTP_POST_FILES = Array
|-> GLOBALS = Array
|-> GATEWAY_INTERFACE = CGI/1.1
|-> SERVER_PROTOCOL = HTTP/1.0
|-> REQUEST_METHOD = GET
|-> QUERY_STRING =
.
.
.
Actual result:
--------------
Replace ...
$entry = preg_replace("/\r*\n/", " ", $entry);
... With ...
$entry = ereg_replace("\r", "", $entry);
$entry = ereg_replace("\n", " ", $entry);
After changing it to ereg_replace() it is working with PHP4.0.1, 4.3.10
and 5.1.1
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=35733&edit=1
