PHP Operators

Posted under » PHP on 11 November 2009

Some basic ones

Arithmetic Operators

• * multiply
• ++ increment
• -- decrement

Comparison Operators

• <> is not equal
• >= is greater than or equal to

Plese take note that rarely just using > is correct because when you are using whole integers, the number you want to compare could be the same number that is the limit.

Logical Operators

• && and
• || or

Examples

$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.

NULL or empty example

if ((is_null($d))&&(!is_null($p))

There are many more operators in PHP.