use of isset() in php

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Joshi jahanvi

use of isset() in php

Postby Joshi jahanvi » Wed Oct 29, 2014 6:27 pm

what is the use of isset() in php?


sonall gajera

Re: use of isset() in php

Postby sonall gajera » Thu Jul 09, 2015 11:37 am

The isset () function is used to check whether a variable is set or not. If a variable is already unset with unset() function, it will no longer be set. The isset() function return false if testing variable contains a NULL value.

Syntax
isset(variable1, variable2......)


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