PHP Operators

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




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