Mantis - Quercus
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ID: Category: Severity: Reproducibility: Date Submitted: Last Update:
4072 minor always 06-08-10 09:14 06-08-10 09:14
Reporter: sblommers Platform: Linux  
Assigned To: OS: Ubuntu  
Priority: normal OS Version: 10.04  
Status: new Product Version: 4.0.8  
Product Build: Resolution: open  
Projection: none      
ETA: none Fixed in Version:  
Summary: 0004072: unset value does not seem to work correctly
Description: After unsetting array_key_exists still returns true but should be false.
Steps To Reproduce: <?php
unset($c); //force $c to be unset
$a=&$c; // NULL, but this actually sets $a and $c to the 'same' NULL.
$a = 5;
unset($c);
$a=&$c;
unset($c);
$a = 5;
?>

In the following example, we see an alternate method of testing if a variable is actually set or not:
<?php
var_dump(array_key_exists('c',get_defined_vars())); // SHOULD BE false
unset($c); // actually unset it
var_dump(array_key_exists('c',get_defined_vars())); // SHOULD BE false
?>
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