Bug #62155 [NEW]: empty () returns false for Countable objects with a count of 0
From: gordon dot mcvey at ntlworld dot com
Operating system:
PHP version: 5.3.13
Package: SPL related
Bug Type: Bug
Bug description:empty () returns false for Countable objects with a count of 0
Description:
------------
If you call empty() on an array with 0 elements, then it will return true.
However, if you call empty() on a Countable object with a count of 0, it
returns
false.
This could catch out people who are implementing objects with Countable as
array
stand-ins.
Test script:
---------------
<?php
class Test implements Countable
{
public $count = 0;
public function count ()
{
return intval (abs ($this -> count));
}
}
$test = new Test ();
var_dump (empty ($test));
var_dump (count ($test));
$test -> count = 10;
var_dump (empty ($test));
var_dump (count ($test));
Expected result:
----------------
bool(true)
int(0)
bool(false)
int(10)
Actual result:
--------------
bool(false)
int(0)
bool(false)
int(10)
--
Edit bug report at https://bugs.php.net/bug.php?id=62155&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=62155&r=trysnapshot54
Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=62155&r=trysnapshot53
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=62155&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=62155&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=62155&r=needdocs
Fixed in release: https://bugs.php.net/fix.php?id=62155&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=62155&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=62155&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=62155&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=62155&r=support
Expected behavior: https://bugs.php.net/fix.php?id=62155&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=62155&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=62155&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=62155&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=62155&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=62155&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=62155&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=62155&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=62155&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=62155&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=62155&r=mysqlcfg
Thread (4 messages)
- gordon dot mcvey at ntlworld dot com