From: dharma dot yp at in dot ibm dot com
Operating system: Windows, Linux
PHP version: 5.2CVS-2007-12-09 (snap)
PHP Bug Type: Arrays related
Bug description: Misleading TRUE return value for array_walk() and
array_walk_recursive().
Description:
------------
In array_walk() and array_walk_recursive() functions,
1) In PHP 5.2 , if we pass non-existent function( not defined), it is
expected to output the warning message with return value "false".It is able
output the warning message but not the correct return value. The warning
message and return value is as follows.
"Warning: array_walk(): Unable to call wrong_function() - function does
not exist in %s on line %d
bool(true)".
Where as in PHP6, it works correct and warning message is as follows.
"Warning: array_walk_recursive() : Expects parameter 2 to be valid
callback, string given in %s on line %d
NULL".
2) In PHP5.2, if we pass less number of parameters for "callback" function
through the array_walk() call, it is expected to ouput the warning message
with return value of "false". It is able to output the warning message but
not the correct return value.The warning message and return value is as
follows.
"Warning: Missing argument 3 for actual_function() in %s on line %d
bool(true)".
This also fails with php 5.3 and php 6.
The return value of " bool(true)" in (1) and (2) will misguide/confuse the
developers as the documentation says array_walk()and
array_walk_recursive()function calls return TRUE on Success and FALSE on
Failure.
Reproduce code:
---------------
/**** for array_walk() ****/
<?php
function actual_function($value, $key, $user_data)
{
echo $value + $key;
}
$input = array( 0 => 1, 1 => 2, 2 => 3);
var_dump( array_walk($input, "wrong_function"));
var_dump( array_walk($input, "actual_function"));
?>
/**** for array_walk_recursive() ****/
function actual_function($value, $key, $user_data)
{
echo $value + $key;
}
$input = array( 0 => 1, 1 => 2, 2 => 3);
var_dump( array_walk_recursive($input, "wrong_function"));
var_dump( array_walk_recursive($input, "actual_function"));
?>
Expected result:
----------------
/**** for array_walk() ****/
Warning: array_walk(): Unable to call wrong_function() - function does not
exist in %s on line %d
bool(false)
Warning: Missing argument 3 for actual_function() in %s on line %d
bool(false)
/**** for array_walk_recursive() ****/
Warning: array_walk_recursive() : Expects parameter 2 to be valid
callback, string given in %s on line %d
NULL
Warning: Missing argument 3 for actual_function() in %s on line %d
bool(false)
Actual result:
--------------
/**** for array_walk() ****/
Warning: array_walk(): Unable to call wrong_function() - function does not
exist in %s on line %d
bool(true)
Warning: Missing argument 3 for actual_function() in %s on line %d
bool(true)
/**** for array_walk_recursive() ****/
Warning: array_walk_recursive() : Expects parameter 2 to be valid
callback, string given in %s on line %d
NULL
Warning: Missing argument 3 for actual_function() in %s on line %d
bool(true)
--
Edit bug report at http://bugs.php.net/?id=43543&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43543&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43543&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43543&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43543&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43543&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43543&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43543&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43543&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43543&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43543&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43543&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43543&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43543&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43543&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43543&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43543&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43543&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43543&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43543&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43543&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43543&r=mysqlcfg
