#43697 [Opn->Bgs]: converting null variable to object type will make the variable non empty
| From: | iliaa@php.net | Date: | Sun, 30 Dec 2007 16:27:29 +0000 |
| Subject: | #43697 [Opn->Bgs]: converting null variable to object type will make the variable non empty | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-120944@lists.php.net to get a copy of this message | ||
ID: 43697
Updated by: iliaa@php.net
Reported By: packard_bell_nec at hotmail dot com
-Status: Open
+Status: Bogus
Bug Type: Variables related
Operating System: windows server 2003 r2
PHP Version: 5.2.5
New Comment:
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
This is an expected behavior and yes it did change from 5.0/5.1 days.
An
empty object is no longer considered to be "empty".
Previous Comments:
------------------------------------------------------------------------
[2007-12-28 11:17:05] packard_bell_nec at hotmail dot com
Description:
------------
When I write the codes concerning type conversion, I found the entitled
"bug". Then, I check the documentation, and I found the statement "an
object with zero member variables (PHP 4 only) is considered FALSE" in~
http://php.net/manual/en/language.types.boolean.php
However, I am NOT going to ask for reopening the above "feature".
Instead, I am going to ask for correcting the "bug" so that "an object
with class stdClass and zero member variables is considered FALSE". The
behavior of empty() should also be changed accordingly.
The extensions that I used:
[PHP_GD2]
extension=php_gd2.dll
[PHP_MBSTRING]
extension=php_mbstring.dll
[PHP_MCRYPT]
extension=php_mcrypt.dll
[PHP_MYSQL]
extension=php_mysql.dll
[PHP_MYSQLI]
extension=php_mysqli.dll
[Zend]
zend_extension_ts="C:\Program Files\PHP\lib\ZendExtensionManager.dll"
zend_extension_manager.optimizer_ts="C:\Program
Files\PHP\lib\Optimizer-3.3.0"
zend_extension_manager.debug_server_ts="C:\Program
Files\PHP\lib\Debugger-5.2.10"
Reproduce code:
---------------
$foo = null; settype($foo, 'object');
$cv_foo = get_class_vars(get_class($foo)); $ov_foo =
get_object_vars($foo);
echo
gettype($foo).'<br/>'.get_class($foo).'<br/>'.var_export($cv_foo,
true).'<br/>'.var_export($ov_foo,
true).'<br/>'.isset($foo).'<br/>'.!empty($foo).'<br/>'.var_export($foo,
true).'<br/><br/>';
$goo = null; settype($goo, 'array');
echo
gettype($goo).'<br/>'.isset($goo).'<br/>'.!empty($goo).'<br/>'.var_export($goo,
true).'<br/><br/>';
$hoo = false; settype($hoo, 'object');
$cv_hoo = get_class_vars(get_class($hoo)); $ov_hoo =
get_object_vars($hoo);
echo
gettype($hoo).'<br/>'.get_class($hoo).'<br/>'.var_export($cv_hoo,
true).'<br/>'.var_export($ov_hoo,
true).'<br/>'.isset($hoo).'<br/>'.!empty($hoo).'<br/>'.var_export($hoo,
true).'<br/><br/>';
$joo = false; settype($joo, 'array');
echo
gettype($joo).'<br/>'.isset($joo).'<br/>'.!empty($joo).'<br/>'.var_export($joo,
true).'<br/><br/>';
Expected result:
----------------
object
stdClass
array (
)
array (
)
1
stdClass::__set_state(array(
))
array
1
array (
)
object
stdClass
array (
)
array (
'scalar' => false,
)
1
1
stdClass::__set_state(array(
'scalar' => false,
))
array
1
1
array (
0 => false,
)
Actual result:
--------------
object
stdClass
array (
)
array (
)
1
1
stdClass::__set_state(array(
))
array
1
array (
)
object
stdClass
array (
)
array (
'scalar' => false,
)
1
1
stdClass::__set_state(array(
'scalar' => false,
))
array
1
1
array (
0 => false,
)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=43697&edit=1