Online PHP editor | output for IkRmG

<?php function _hex2bin($hex) { $hex = strtoupper($hex); $hexLen = strlen($hex); $bin = []; for ($i = 0; $i < $hexLen; $i++) { $char = $hex[$i]; if ($char == '0') $bin[] = "0000"; else if ($char == '1') $bin[] = "0001"; else if ($char == '2') $bin[] = "0010"; else if ($char == '3') $bin[] = "0011"; else if ($char == '4') $bin[] = "0100"; else if ($char == '5') $bin[] = "0101"; else if ($char == '6') $bin[] = "0110"; else if ($char == '7') $bin[] = "0111"; else if ($char == '8') $bin[] = "1000"; else if ($char == '9') $bin[] = "1001"; else if ($char == 'A') $bin[] = "1010"; else if ($char == 'B') $bin[] = "1011"; else if ($char == 'C') $bin[] = "1100"; else if ($char == 'D') $bin[] = "1101"; else if ($char == 'E') $bin[] = "1110"; else if ($char == 'F') $bin[] = "1111"; else $bin[] = "0000"; } return implode("", $bin); } echo _hex2bin("152F302436152F302435152F302434152F302433152F302433");