recursive functions; building a string

dacloo

G'day!

I have a common problem with recursive functions. Below is a very simple example of that problem. I'd like to build a string (MYSTRING) until the recursive condition becomes false.
But making the variable global, or send it back to the recursive function doesn't help: each recursive called function is a new instance!

How can I avoid this problem?

Thank you.

function makeString($a) {
	// Recursive function.
	if ($a<5) {
		$MYSTRING .="$a WOOHOO ";
		makeString($a+1);	
		}

}

drawmack

<?php
function makeString($a) {
    if ($a<5)
        return $a . makeString(($a+1));
    else
        return $a
}
?>

dacloo

Thank you.

<?php 
function makeString($a) { 
    if ($a<5) 
        return $a . makeString(($a+1)); 
    else 
        return $a 
} 
?>

Euhm....Well....I have a string, and you seem to use $a for both the counter and the string? I'd like to build MYSTRING as stated in my original code.

Why did you put two (( and )) instead of one ( and ) ?

drawmack

Why don't you see if you can modify my code to create a string that is what you want.

If you give a man a fish you feed him for a day, if you teach a man to fish you feed him for a lifetime.