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Bug #43935 (1 == 'foo') = true
Submitted: 2008-01-25 14:11 UTC Modified: 2008-01-25 17:30 UTC
Votes:1
Avg. Score:1.0 ± 0.0
Reproduced:0 of 1 (0.0%)
From: james dot laver at gmail dot com Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.2.5 OS: GNU/Linux
Private report: No CVE-ID: None
View Developer Edit
 [2008-01-25 14:11 UTC] james dot laver at gmail dot com 
Description:
------------
(1 == 'foo') returns boolean true

The documentation claims otherwise (see http://www.php.net/manual/en/types.comparisons.php)

Logically this cannot be true, and it should not be necessary to use === to perform this.

Reproduce code:
---------------
echo "value: " . (true == 'foo');

Expected result:
----------------
"value: 0"

Actual result:
--------------
"value: 1"

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 [2008-01-25 16:53 UTC] php at zjs dot name 
In your description, you use "(1 == 'foo')" and "(true == 'foo')" interchangeably. "(1 == 'foo')" isn't the same as "(true == 'foo')".

Try (using your structure) running:
echo "(true == 'foo') value: " . (true == 'foo') . "<br />";
echo "(1 == 'foo') value: " . (1 == 'foo') . "<br />";
echo "(true === 'foo') value: " . (true === 'foo') . "<br />";
echo "(1 === 'foo') value: " . (1 === 'foo') . "<br />";

Expected result (based on documentation is):
(true == 'foo') value: 1
(1 == 'foo') value:
(true === 'foo') value:
(1 === 'foo') value:

I also created a short test case to ensure that my results matched the documentation (they did). If you're interested in running it (results look like http://people.clarkson.edu/~shephezj/temp/comparison_test.php) it's available at http://people.clarkson.edu/~shephezj/temp/comparison_test.phps. 
(Yes, I know that's a terrible way to code it, but I didn't want to risk having something interfere with the results).
 [2008-01-25 17:22 UTC] james dot laver at gmail dot com 
That's not the result I get here. Have tried this both with home compiled PHP and with rPath's binaries

[james@james ~]$ php -v
PHP 5.2.5 (cli) (built: Jan 25 2008 13:02:08) 
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies
 [2008-01-25 17:30 UTC] james dot laver at gmail dot com 
Sorry, i hit submit before I was finished and then I was wrong anyway.

Human error.

<?php
echo "php == true ". (('php'==true)?'true':'false') . "\n";
echo "1 == php " . (('php'==1)?'true':'false');
?>
php == true true
1 == php false

Closing as bogus, sorry about that
 
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