php - Set value to false if value if == false -

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If I set the value == is wrong. How can I set a value false?

I know if I can do it like this: 

  $ string = ('There is such a truth that returns' Is "whatever is right"): wrong);

But I need something clever.

I am searching for something like this. 

  $ string = ('Such a return true')? false;

Example I want to be a liar: 

  $ string = array ()? false; $ String = ''? false;

tl; Dr: If string is not setting i == is not true, set to false.

If you are using 5.3+ 

  $ string = ('Some such truth that comes back') ?: wrong;

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