Logical Operators

Logical Operators


Example
Name
Result




$a and $b
And
TRUE if both $a and $b are TRUE.


$a or $b
Or
TRUE if either $a or $b is TRUE.


$a xor $b
Xor
TRUE if either $a or $b is TRUE, but not both.


! $a
Not
TRUE if $a is not TRUE.


$a && $b
And
TRUE if both $a and $b are TRUE.


$a || $b
Or
TRUE if either $a or $b is TRUE.



The reason for the two different variations of "and" and "or" operators is that they operate at different precedences.


Example #1 Logical operators illustrated



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