Is there a difference between !== and != in PHP?
Is there a difference between !== and != in PHP?
The != operator compares value, while the !== operator compares type as well.
That means this:
var_dump(5!="5"); // bool(false)
var_dump(5!=="5"); // bool(true), because "5" and 5 are of different types
!= is the inverse of the == operator, which checks equality across types
!== is the inverse of the === operator, which checks equality only for things of the same type.