Null coalescing operator

So i was reading php manual today and i noticed so much stuff i did not know php had and one of thoes things was Null coalescing operator it's introduced in php versions <= 7

how it works it check the first operand to see if it has value and is not == to null like isset does if it not set or == to null it returns next operand and so forth
example of what i mean

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This is only in >= 7, not <= 7.
The spaceship operator is pretty cool too.

I'm only excited about them because they can be used to make obfuscation even better for PHP scripts.

EDIT: you should try this if you like PHP -

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