From: ante at abstraktmedia dot com
Operating system: Win XP
PHP version: 5.1.2
PHP Bug Type: SPL related
Bug description: Calling is_array on ArrayObject problem (even when casting)
Description:
------------
OK...
I'm using ArrayObject quite a lot and I experienced something which is not
logical...
If I have
$arrayObj = new ArrayObject(Array("Test"))
function is_array() returns false which is not ok in the first place...but
never mind...we'll cast it to array so we use
if(is_array((array) $arrayObj)) .....
but the problem is what if $arrayObj is not Array...what if it's null or
string? casting to array will make the function
return true even if the variable is null....
That's the real problem....
Shor story...I cannot use is_array on ArrayObject if I don't cast that
object to a "normal" array..But if I use casting and variable is for
example string then is_array will return true when it should return
false....
Reproduce code:
---------------
Logicaly:
$arrayObj = new ArrayObject(Array("Test"));
//we don't use casting!!
if(is_array($arrayObj)) ... should return TRUE
but because of the internal workings of PHP we have to convert ArrayObject
to Array before sending it to is_array function...
But what if our Array is String actually...??or Null???
Because we HAVE TO cast that ArrayObject before sending it to is_array it
will also cast String or anything else to an Array and therefore function
will return TRUE...
$arrayObj = new ArrayObject(Array("Test"));
//$arrayObj = null;
if(is_array((array) $arrayObj)) {
print("Is array!");
}
else {
print("Not array!");
}
Now try uncommeting second line and commenting first...
--
Edit bug report at http://bugs.php.net/?id=36930&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36930&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36930&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36930&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36930&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36930&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36930&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36930&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36930&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36930&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36930&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36930&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36930&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36930&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36930&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36930&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36930&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36930&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36930&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36930&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36930&r=mysqlcfg
