PHP Operators

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Arithmetic Operators

Operator	Description	Example	Result		Operator	Description	Example	Result
+	Addition	x=2 x+2	4		-	Subtraction	x=2 5-x	3
*	Multiplication	x=4 x*5	20		/	Division	15/5 5/2	3 2.5
++	Increment	x=5 x++	x=6		%	Modulus (division remainder)	5%2 10%8 10%2	1 2 0
--	Decrement	x=5 x--	x=4

Assignment Operators

Operator	Example	Is the Same as		Operator	Example	Is the Same as
=	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

Comparison Operators

Operator	Description	Example		Operator	Description	Example
==	is equal to	5==8 returns false		!=	is not equal	5!=8 returns true
>	is greater than	5>8 returns false		<	is less than	5<8 returns true
>=	is greater than or equal to	5>=8 returns false		<=	is less than or equal to	5<=8 returns true

Logical Operators

Operator	Description	Example		Operator	Description	Example
&&	and	x=6 y=3 (x < 10 && y > 1) returns true		||	or	x=6 y=3 (x==5 || y==5) returns false
!	not	x=6 y=3 !(x==y) returns true