Exit
-----
<?php
exit;
exit();
exit('Die!');
die;
die();
die('Exit!');
-----
array(
    0: Expr_Exit(
        expr: null
    )
    1: Expr_Exit(
        expr: null
    )
    2: Expr_Exit(
        expr: Scalar_String(
            value: Die!
        )
    )
    3: Expr_Exit(
        expr: null
    )
    4: Expr_Exit(
        expr: null
    )
    5: Expr_Exit(
        expr: Scalar_String(
            value: Exit!
        )
    )
)