Online PHP editor | refs for AVWWq

<?php function isDivisible_x_3($n) { if (strlen($n) == 3){ list($a,$b,$c) = str_split($n); if ($b == $a + 1 && $c == $b + 1){ $mess = "\n$n is divisible by three\n"; $mess .= "\nProof: \$n//3 == " . $n/3; return $mess; } } } $num = 234; echo isDivisible_x_3( $num );