Online PHP editor | output for lqel7

<?php class String { protected $_string; public function __construct($string) { if(is_string($string)) $this->_string = $string; elseif(is_int($string)) $this->_string = $this->intToAscii($string); else $this->_string = null; echo('Error, string::__construct() argument 1 must be a string!'); } public function __toString() { return $this->_string; } public function ascii() { $code = ''; if(strlen($this->_string)==1) return ord($this->_string); else for($i = 0; $i < strlen($this->_string); $i++) { $code .= ord($this->_string[$i]); } return $code; } } $str = new String('Hello World!'); echo($str->ascii().' '); echo($str);