PHP: Defining A Function
Define a Function
A function is defined using keyword function
. Like this:
<?php function ff($x,$y) { return($x+$y); } echo ff(3,4); # 7 ?>
Optional Parameters
<?php /* ff($x,$y) returns x + y. If $y is not given, default to 1. */ function ff($x,$y=1) { return($x+$y); } echo ff(3); # 4 ?>