php sign a token code example

Example 1: php token

class token {
    public $type;
    public $token;
    public $val;

    public function __construct($type, $token, $val) {
        $this->type = $type;
        $this->token = $token;
        $this->val = $val;
    }
}

Example 2: php token

define("IS_OPERATOR", 0);
define("IS_OPERAND", 1);