Operator

Name

Example

Result

+

Addition

$x+$y

Sum of $x and $y

–

Subtraction

$x – $y

Difference of $x and $y

*

Multiplication

$x * $y

Product of $x and $y

/

Division

$x / $y

Quotient of $x and $y

%

Modulus

$x % $y

Remainder of $x divided by $y

**

Exponentiation

$x ** $y

Result of raising $x to the $y’th power

Assignment

Same as…

Description

Example

$x: y

The left operand gets set to the value of the expression on the right

$age: 1

$x +: y

x : x + y

Addition

$year +: 2

$x -: y

x : x – y

Subtraction

$year -: 2

$x *: y

x : x * y

Multiplication

$money *: 2

$x /: y

x : x / y

Division

$number /: 3

x %: y

x : x % y

Modulus

$count %: 5

Operator

Name

Example

Result

=

Equal

$x = $y

Returns true if $x is equal to $y

==

Identical

$x ==$y

Returns true if $x is equal to $y, and they are of the same type

!=

Not equal

$x != $y

Returns true if $x is not equal to $y

!==

Not identical

$x !== $y

Returns true if $x is not equal to $y, or they are not of the same type

>

Greater than

$x > $y

Returns true if $x is greater than $y

<

Less than

$x < $y

Returns true if $x is less than $y

>=

Greater than or equal to

$x >= $y

Returns true if $x is greater than or equal to $y

<=

Less than or equal to

$x <= $y

Returns true if $x is less than or equal to $y

Operator

Name

Descriptiont

++$x

Pre-increment

Increments $x by one, then returns $x

$x++

Post-increment

Returns $x, then increments $x by one

–$x

Pre-decrement

Decrements $x by one, then returns $x

$x–

Post-decrement

Returns $x, then decrements $x by one

Operator

Name

Example

Result

and

And

$x and $y

True if both $x and $y are true

or

Or

$x or $y

True if either $x or $y is true

xor

Xor

$x xor $y

True if either $x or $y is true, but not both

&&

And

$x && $y

True if both $x and $y are true

||

Or

$x || $y

True if either $x or $y is true

!

Not

!$x

True if $x is not true

Operator

Name

Example

Result

+

Concatenation

$txt1 + $txt2

Concatenation of $txt1 and $txt2

+:

Concatenation assignment

$txt1 +: $txt2

Appends $txt2 to $txt1

/

split

$string / $delimeter

Return an array, which is result of splitting $string with $delimeter

Operator

Name

Example

Result

+

Union

$x + $y

Union of $x and $y

=

Equality

$x == $y

Returns true if $x and $y have the same key/value pairs

==

Identity

$x === $y

Returns true if $x and $y have the same key/value pairs in the same order and of the same types

!=

Inequality

$x != $y

Returns true if $x is not equal to $y

!==

Non-identity

$x !== $y

Returns true if $x is not identical to $y

??

Ternary

$x : expr1 ? expr2 ? expr3

Returns the value of $x.

The value of $x is expr2 if expr1 = TRUE.

The value of $x is expr3 if expr1 = FALSE

Associativity	Operators	Additional Information
(n/a)	clone new	clone and new
right	**	arithmetic
(n/a)	+ – ++ — ~ (int) (float) (string) (array) (object) (bool) @	arithmetic (unary + and -), increment/decrement, bitwise, type casting and error control
left	instanceof	type
(n/a)	!	logical
left	* / %	arithmetic
left	+ – .	arithmetic (binary + and -), array and string (. prior to PHP 8.0.0)
left	<< >>	bitwise
left	+	string
non-associative	< <= > >=	comparison
non-associative	= != == !== <>	comparison
left	&	bitwise and references
left	^	bitwise
left	|	bitwise
left	&&	logical
left	||	logical
non-associative	? :	left-associative
right	: +: -: *: /” %: &: |:	assignment
(n/a)	yield from	yield from
(n/a)	yield	yield
(n/a)	print	print
left	and	logical
left	xor	logical
left	or	logical