Online PHP editor | refs for u69gc

<?php class MyMorse { private array $morseCodeByPlainTexts = [ 'A' => '.-', 'H' => '....', 'L' => '.-..', 'N' => '-.', 'O' => '---', 'P' => '.--.', 'S' => '...', 'T' => '-', 'U' => '..-', 'Y' => '-.--', ]; public function encode(string $plainTexts): string { // prepend all letters except first with a space, add two spaces for every space in the input string return preg_replace_callback( pattern: '/(^)?(\S)| /', callback: fn($m) => ctype_space($m[0]) ? ' ' : ($m[1] ?? ' ') . $this->morseCodeByPlainTexts[$m[2]], subject: $plainTexts, flags: PREG_UNMATCHED_AS_NULL ); } } $obj = new MyMorse(); var_export( $obj->encode('YOU SHALL NOT PASS') );