[PHP] Testing if variable was set

[Jordan Elver]

Hi,
If I want to test if a variable exists (or has been passed) then I just do:

if($var) {
        // variable is here
}

But I've noticed that a lot of people do:

if(isset($var)) {
        // variable is here
} 

What's the difference and which is the best way?

TIA,

Jord

-- 
Jordan Elver
while (!asleep()) sheep++;

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