Function within a function

Discussion in 'PHP' started by Cinta April, Apr 17, 2008.

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  1. #1
    Hi I am trying to use a function within a function. Is there an example of a function using itself within the definition of the function? When I try my current version it says the function is not defined.
     
    Cinta April, Apr 17, 2008 IP
  2. Louis11

    Louis11 Active Member

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    #2
    Yes, it's called recursion. Here is a little something that I whipped up for you to have a look at:
    
	function divide($number){
		if($number < 1)
			exit("Done: " . $number);
			
		divide($number/2);
	}
	
	divide(100);
    PHP:
    Nothing special, but you get the idea ;)

    On a side note, recursion is a terrible way of doing something. If you can, avoid it as it is a memory hog and has a longer run time than an inline function. But, I will admit, in some cases it is warranted and can give you much more concise code.
     
    Louis11, Apr 17, 2008 IP