PHP, Javascript, Java, and other C# style language Operators

Arithmetic Operators

Operator	Description	Example	Result
+	Addition	x=4+3	x=7
-	Subtraction	x=10-3	x=7
*	Multiplication	x=2*9	x=18
/	Division	x=6/2 y=5/2	x=3 y=2.5
%	Modulus (division remainder)	x=7%2 y=9%3 z=10%4	x=1 y=0 z=2
++	Increment	x=8; x++;	x=9
--	Decrement	x=8; x--;	x=7

Assignment Operators

Operator	Example	Equivalent
=	x=y	x=y
+=	x+=y	x=x+y
-=	x-=y	x=x-y
*=	x*=y	x=x*y
/=	x/=y	x=x/y
.=	x.=y	x=x.y
%=	x%=y	x=x%y

Comparison Operators

Operator	Description	Example
==	is equal to	2==2 returns true 3==2 returns false
!=	is not equal	2!=2 returns false 3!=2 returns true
<>	is not equal (only at PHP)	2<>2 returns false 3<>2 returns true
>	is greater than	2>3 returns false 3>2 returns true
<	is less than	2<3 returns true 3<2 returns false
>=	is greater than or equal to	2>=2 returns true 2>=3 returns false 3>=2 returns true
<=	is less than or equal to	2<=2 returns true 2<=3 returns true 3<=2 returns false

Logical Operators

Operator	Description	Example
&&	and	x=2 y=3 (x < 5 && y > 2) returns true
||	or	x=2 y=3 (x < 1 && y > 2) returns true
!	not	x=2 y=3 !(x==y) returns true