help: isset() function - Dev Articles

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December 18th, 2002, 11:26 AM

hal_rac

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Join Date: Dec 2002

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help: isset() function

I'm new comer to PHP.

I don't now what [isset()] function does because it's not
executing and [function_exists("isset")?1:0;]returned 0.

i always see it in conditional tests like this:
if(isset($variable))...

Any idea.
Thanks in advance.

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