#46004 [Opn]: A non stict condition with 0 return true
| From: | roland dot dufour at multiprog dot net | Date: | Fri, 05 Sep 2008 15:36:48 +0000 |
| Subject: | #46004 [Opn]: A non stict condition with 0 return true | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-128708@lists.php.net to get a copy of this message | ||
ID: 46004
User updated by: roland dot dufour at multiprog dot net
Reported By: roland dot dufour at multiprog dot net
Status: Open
Bug Type: *General Issues
Operating System: Windows Vista Ultimate French
PHP Version: 5.2.6
New Comment:
With a non strict condition, the expected result is :
bool(true) bool(false) bool(true)
And, with a strict condition, the expected result is :
bool(false) bool(false) bool(true)
Previous Comments:
------------------------------------------------------------------------
[2008-09-05 15:33:49] roland dot dufour at multiprog dot net
Description:
------------
When I try a non strict condition 0 == 'test', PHP return true.
Reproduce code:
---------------
// Non-strict condition
var_dump((0 == 'test'));
var_dump((1 == 'test'));
var_dump(('test' == 'test'));
// Strict condition
var_dump((0 === 'test'));
var_dump((1 === 'test'));
var_dump(('test' === 'test'));
Expected result:
----------------
bool(false) bool(false) bool(true)
I don't understand why a condition 0 == 'test' return true.
I discovered this "bug" by exploring the keys of a table via the
instruction "foreach". My code was then:
$options = array(
array(), // an array
array(), // an other array
'refProduct' => 'test' // a value
);
foreach ($options as $k => $option) {
if ('refProduct' == $k){
continue;
}
// Instructions...
}
Curiously, only my secondary table ("an other array") was executed by
"Instructions...".
Actual result:
--------------
bool(true) bool(false) bool(true)
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=46004&edit=1