2014-09-21

PHP Operators



Operators are used to operate on values.


PHP Operators
This section lists the different operators used in PHP.

Arithmetic Operators
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
%
Modulus (division remainder)
5%2
10%8
10%2
1
2
0
++
Increment
x=5
x++
x=6
--
Decrement
x=5
x--
x=4


Assignment Operators
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
%=
x%=y
x=x%y


Comparison Operators
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
&&
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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