debug_backtrace .. and memory consumption

[eluser]Ramania[/eluser]
hello people,

i was wondering if anyone knows how much overhead could i cause my code once i call debug_backtrace() each time a function is called, i would like to know the name of the function called for some reason in my code, and i found no alternative than called debug_backgrace() and getting the function name from the array e.g.

Code:

$functionName = debug_backtrace();
        echo $functionName['0']['function'];

i'm thinking about using the profiler later on, but for now i wanted to get a professional opinion about the matter, and if there is a better alternative that i could use.

thank you very much,

Rami