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Bug #20534 unset fails under certain conditions
Submitted: 2002-11-20 23:54 UTC Modified: 2002-11-21 00:42 UTC
From: sputnik at reflexx dot net Assigned:
Status: Not a bug Package: Variables related
PHP Version: 4.2.3 OS: FreeBSD 4.6
Private report: No CVE-ID: None
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 [2002-11-20 23:54 UTC] sputnik at reflexx dot net
global $myvar;
unset ($myvar);

// works.

-------------------

// ($unsetvar was set to "foo" somewhere in the script, and is global

global $unsetvar;
echo $unsetvar; // => "foo"

if($unsetvar == "foo") {
	echo "unsetting myvar";
	global $myvar;
	unset($myvar);
}

// this will echo "unsetting myvar" but NOT unset the variable!

// it seems the bug occurs when trying to use unset inside a structure that is doing some kind of test on a variable brought into global scope (even though the variable has the orrect value and the if statement succeeds!). It's not the if statement, because if(1) works.

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 [2002-11-21 00:42 UTC] derick@php.net
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
 
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