From:             rele at gmx dot de
Operating system: Windows XP SP2
PHP version:      5.2.3
PHP Bug Type:     Scripting Engine problem
Bug description:  Omitting length param in array_slice not possible

Description:
------------
array_slice supports omitting of the $length parameter only if you pass
just the first two parameters (params 1 and 2), but passing the default
value NULL when you want to set $preserve_keys to TRUE (params 1, 2, 3 and
4) does not work.
This would be especially useful for associative arrays.

Reproduce code:
---------------
$a = array(1,2,3);
$b = array('a'=>1,'b'=>1,'c'=>2);
var_dump(array_slice($a, 1), array_slice($a, 1, 2, TRUE), array_slice($a,
1, NULL, TRUE), array_slice($b, 1), array_slice($b, 1, 2, TRUE),
array_slice($b, 1, NULL, TRUE));

Expected result:
----------------
array(2) {
  [0]=>
  int(2)
  [1]=>
  int(3)
}
array(2) {
  [1]=>
  int(2)
  [2]=>
  int(3)
}
array(2) {
  [1]=>
  int(2)
  [2]=>
  int(3)
}
array(2) {
  ["b"]=>
  int(1)
  ["c"]=>
  int(2)
}
array(2) {
  ["b"]=>
  int(1)
  ["c"]=>
  int(2)
}
array(2) {
  ["b"]=>
  int(1)
  ["c"]=>
  int(2)
}

Actual result:
--------------
array(2) {
  [0]=>
  int(2)
  [1]=>
  int(3)
}
array(2) {
  [1]=>
  int(2)
  [2]=>
  int(3)
}
array(0) {
}
array(2) {
  ["b"]=>
  int(1)
  ["c"]=>
  int(2)
}
array(2) {
  ["b"]=>
  int(1)
  ["c"]=>
  int(2)
}
array(0) {
}

-- 
Edit bug report at http://bugs.php.net/?id=41686&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=41686&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=41686&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=41686&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=41686&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=41686&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=41686&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=41686&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=41686&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=41686&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=41686&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=41686&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=41686&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=41686&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=41686&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=41686&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=41686&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=41686&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=41686&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=41686&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=41686&r=mysqlcfg

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