Online PHP editor | output for 1B13W

<?php class interpreter { private $_code; public function __construct($code) { if(!is_string($code)) exit('Error while parsing code; Code not conformal.'); $this->_code = $code; $this->parser(); } public function parser($code = null) { if($code === null) $code = $this->_code; $calls = []; $variables = []; preg_match('#(.*)$(.*)$#', $code, $calls); if($calls && isset($calls[0])) $this->calls($calls); } private function calls(array $calls) { switch($calls[1]) { case 'print': $this->func_print($calls[2]); break; } } private function func_print($arg) { if(preg_match('#^("|\')(.*)("|\')$#', $arg)) $arg = preg_replace('#^("|\')(.*)("|\')$#', '$2', $arg); echo($arg); } } $code = <<<CODE int var = 1; if(var == 1) { console.out.println("Hello World!"); } else { console.out.println("Hi!"); } CODE; $program = new interpreter($code);