PHP variadic functions

So at first what is a variadic function ? A variadic function is a function that accepts a variable number of arguments, that is it!

Starting from PHP 5.6 version we can write it using a special “splat” operator = ... So the simplest example would be this:

function variadic(...$args) {
    return $args;
} 
var_dump(variadic(1,2,3,4)); //  and you get it in form of the array [1,2,3,4]

In the earlier versions of PHP func_get_args() and func_num_args() were used in order to create variadic functions. The first one gets you all the args in array form and the second you might’ve guessed just gives you a number of args.

Well the most trivial usage examples are - calculate average for a bunch of numbers, strig concatenation, … you get the idea.