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opposite of isset

316 Contributor
hi all

i have an if statement but i need to use the oppsite of isset like isn'tset only i know that isn't right is it like !isset or isset! or somthing totaly different

Feb 20 '07 #1
4 17298
134 New Member
Perhaps you could try this...

if (isset($var)) {

Do what you don't want to do here...

} else {
Do what you want here
Feb 20 '07 #2
4,258 Recognized Expert Specialist
The isset() function returns a boolean. So it is either true or false.

When you test using if (isset(xxx)) your action is performed on the true result of the isset.
When you test using if (!isset(xxx)) your action follows the true result of the NOT isset.

Hope this is clear. So the answer is: test with !isset(xx)

Ronald :cool:
Feb 20 '07 #3
316 Contributor
thanks that was very clear

Feb 20 '07 #4
4,258 Recognized Expert Specialist
As ever: you are welcome.

Ronald :cool:
Feb 20 '07 #5

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