Generate Random Hexa Color with PHP

<?php

function random_color_part() {
    return str_pad( dechex( mt_rand( 0, 255 ) ), 2, '0', STR_PAD_LEFT);
}

function random_color() {
    return '#'. random_color_part() . random_color_part() . random_color_part();
}

echo random_color();