Online PHP editor | output for mrb8f

<?php function pack_array_of_bools_to_string(array $bools): string { $str = ''; $l = count($bools); for ($i = 0; $i < $l; ++$i) { $str .= $bools ? '1' : '0'; } return $str; } function unpack_string_to_array_of_bools(string $packed): array { $arr = []; $l = strlen($packed) - 1; for ($i = 0; $i < $l; ++$i) { $arr[] = $packed[$i] === '1'; } return $arr; } $arr = [ true, true, false, true, false, false, true, true, false, false, false, true, false ] var_dump( pack_array_of_bools_to_string($arr), unpack_string_to_array_of_bools('1101001100010') );