function exists

[eluser]dbashyal[/eluser]
how can i check if function exists in CI

i did

Code:

if(function_exists($this->direction))

also,

Code:

if(function_exists('direction'))

none of them worked

on the previous one it says undefined property direction

second one returns false

i searched the forum couldn't find the solution.

i am not that much into classes, so get hard time, sometimes