Testing for variable varialbes

[KevinMG]

is there a way to test if a variable variable is set?

i.e.

$multiple = $field_name.'multiple';
$multiple = $$multiple;

this code throws an undefined variable error when $$multiple doesn't exist.

if(isset($$multiple)) { //blah }

thows an undefined variable error as well (because it is actually testing for the variable '')

does anyone have a good way around this (preferably one which does not throw any errors or warnings)

thanks in advance! - Kevin

[Chimera]

Try this :

if (isset(${$multiple})) { //blah }

[KevinMG]

*slaps himself in the face

thanks, that was it 🙂