PHP is such an ugly language

ugly_nowdoc.php

<?php
class MyClass
{
    static function myMethod(
        $x = <<<'FOO'
Hello
FOO
, $y = <<<'BAR'
 PHP_Depend
BAR
    ) {
        echo $x, $y;
    }
}

It is an constant expression, why create an extra rule limiting this? This brings complexity to the parser etc. If people want to do bad things they always can, inventing arbitrary artificial unneeded limitations is bad and makes the language more complex. We have cases which look like arbitrary limitations in the syntax, and that's always a pain ...

I do not critizes this syntax consistency at all, but I hate/dislike the now- and heredoc syntax in general from the first day and so this usage looks so ugly for me.