white space string

[Tswitz00]

I need to be able to check for a string with nothing but whitespace. The problem I am having with one of my forms is people can just hit the space bar a couple of times and it will return true when i check for $var != ''

I tried a couple of ctypes_ with no luck. Any suggestions?

[rincewind456]

trim()

[imi_99]

I think you doing somthing wrong , it should work.
first check if it is bringing the right value. like is u put word category then see the word you type is geting there by using echo "$var"; command.
if you getting right value value. then try both way and use like this
if($var=="") { echo "print empty"; }
else { echo "print value"; }

and also try other way round
like if($var!= ""){ echo ....................

hope this should work

otherwise use javascript. javascript is fast and quicker because use on client side.