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Operators are used to operate on values.
This section lists the different operators used in PHP.
Arithmetic Operators
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Operator
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Description
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Example
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Result
|
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+
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Addition
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x=2
x+2
|
4
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-
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Subtraction
|
x=2
5-x
|
3
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*
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Multiplication
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x=4
x*5
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20
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/
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Division
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15/5
5/2
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3
2.5
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%
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Modulus (division remainder)
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5%2
10%8
10%2
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1
2
0
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++
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Increment
|
x=5
x++
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x=6
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--
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Decrement
|
x=5
x--
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x=4
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Assignment Operators
|
Operator
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Example
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Is The Same As
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=
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x=y
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x=y
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+=
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x+=y
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x=x+y
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-=
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x-=y
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x=x-y
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*=
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x*=y
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x=x*y
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/=
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x/=y
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x=x/y
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.=
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x.=y
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x=x.y
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%=
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x%=y
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x=x%y
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Comparison Operators
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Operator
|
Description
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Example
|
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==
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is equal to
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5==8 returns false
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!=
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is not equal
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5!=8 returns true
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<>
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is not equal
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5<>8 returns true
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>
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is greater than
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5>8 returns false
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<
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is less than
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5<8 returns true
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>=
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is greater than or equal to
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5>=8 returns false
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<=
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is less than or equal to
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5<=8 returns true
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Logical Operators
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Operator
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Description
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Example
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&&
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and
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x=6
y=3
(x < 10 && y > 1) returns true
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||
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or
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x=6
y=3
(x==5 || y==5) returns false
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!
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not
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x=6
y=3
!(x==y) returns true
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