Check if value exists

[wemustdesign]

I know how to check if a variable has been set but how can I check if a value exists for the variable. I know how to check if it is NULL but how do I check if the variable has a value?

[Maq]

isset()

[wemustdesign]

But I have already declared the variable:

 

$x= $_GET['uk'];

 

so if I use (isset($x)) it come back that a value has been set even though no variable has been passed by the query string

[Maq]

That will return true because $x has been set to something even if it's empty or null.

 

If you want to check if the value of $x is empty then use: empty

[gffg4574fghsDSGDGKJYM]

Put the $_GET inside isset

 

<?php

if (isset($_GET['uk']))
{
   $x = $_GET['uk'];
} else {
   $x = "default value";
}

?>

 

is that what you are looking for ?