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Subject: Re: Detecting if a null variable exists?
From: mike@php.net (Michael Wallner)

On 06/11/2010 07:43 PM, Brian Moon wrote:
> Is it just me or are we missing a way in the language to check if a
> variable that has been set to NULL exists or not?
>...
> perhaps an var_exists() function is needed to fill this hole?
>

php -r 'function f(){$f=null; var_dump(array_key_exists("f", get_defined_vars()));} f();'



Mike