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.