PHP Array Operators

The PHP array operators are used to compare arrays.

Operator    Name              Example      Result
+           Union             $x + $y      Union of $x and $y    
==          Equality          $x == $y     Returns true if $x and $y have the same key/value pairs    
===         Identity          $x === $y    Returns true if $x and $y have the same key/value pairs in the same order and of the same types    
!=          Inequality        $x != $y     Returns true if $x is not equal to $y    
<>          Inequality        $x <> $y     Returns true if $x is not equal to $y    
!==         Non-identity      $x !== $y    Returns true if $x is not identical to $y
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