- strrev: documentation ( source)
<?php
$lots_of_bins="001100010011000000110000001100000011000000110001001100000011000000110000001100010011000100110001001100000011000100110001001100000011000100110000001100010011000000110000001100010011000100110000001100010011000000110000001100010011000000110001001100010011000000110000001100010011000000110000001100000011000100110001001100000011000000110000001100000011000000110000001100010011000000110000001100010011000000110000001100010011000100110001001100010011000000110001001100000011000100110000001100010011000100110001001100000011000100110000001100010011000100110000001100000011000100110000";
$solution=Encoder::bin2asc(strrev(Encoder::bin2asc($lots_of_bins)));
pritn($solution);