note 10859 rejected and deleted from isset by zak

From: Date: Fri, 09 Feb 2001 15:31:31 +0000
Subject: note 10859 rejected and deleted from isset by zak
Groups: php.notes 
Request: Send a blank email to php-notes+get-10848@lists.php.net to get a copy of this message
can someone tell why this function is needed, when you can surely just use this: $a = "hello"; if ($a){ //do something } i thought php did garbage collection for you, or is this method and unset/empty more efficient?

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