<?php


    function randarr( $N, $min = 0, $max = 100) {
        return array_map(
            function() use($min, $max) {
                return rand( $min, $max);
            },
            array_pad( [], $N, 0)
        );
    }

    print_r( randarr(5));
    print_r( randarr(5, 22, 24));
    print_r( randarr(5, 0, 1E9));