[PHP-DEV] PHP 4.0 Bug #8409: in_array acting strange From: anil <email protected>
Date: 12/24/00

From: anil <email protected>
Operating system: OpenBSD
PHP version: 4.0.4
PHP Bug Type: Scripting Engine problem
Bug description: in_array acting strange

in_array() is acting very strange; here is the script I am using:

<?
$a = array('1.10','1.12.4.3','1.13.4.2');
var_dump($a);
if (in_array('1.1',$a)) echo '1.1 found without strict check';
if (in_array('1.1',$a, true)) echo '1.1 found with strict check';
?>

Output:

array(3) {
  [0]=>
  string(4) "1.10"
  [1]=>
  string(8) "1.12.4.3"
  [2]=>
  string(8) "1.13.4.2"
}
1.1 found without strict check

Now, '1.1' should never be found at all, since its not in the input string array, but it is found!

However, looking at the source code reveals an undocumented 'strict' argument, which when set to true, works correctly.

Two issues:

a) Could this extra parameter please be documented?

b) Why on earth does it match them as identical when it's not 'strict'? Do they revert to being evaluated in an integer context (the only way I can think off that 1.10 and 1.1 would be equivalent) 

-- 
Edit Bug report at: http://bugs.php.net/?id=8409&edit=1

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