Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it.
Remember that the closing _END; must appear right at the start of a new line, and it must be the only thing on that line.
PHP is a loosely typed langauge. This means that variables do not have to be declared before they are used and that PHP always converts variables to the type required by their context when they are accessed.