Basic operators in php

Operators are used in PHP to perform operations using different variables and values. There are different types of operators available in PHP. They are:

1.Arithmetic operators
2.Assignment operators
3.Comparison operators
4.Increment/Decrement operators
5.Logical operators
6.String operators
7.Array operators
8.Conditional assignment operators

1.Arithmetic operators

Operator	Name	Definition	Example
+	Addition	To add two numbers	$x+$y
-	Substraction	To substract two numbers	$x-$y
*	Multiplication	To multiply two numbers	$x*$y
/	Division	To divide two numbers	$x/$y
%	Modulus	To perform modulo division of two numbers	$x%$y
**	Expontiation	To take the raising power of two numbers	$x**$y

2.Assignment operators

Operator	Name	Definition	Example
=	Assign	To assign right value to left variable	$x=$y
+=	Addition	To add two numbers	$x+=$y
-=	Substraction	To substract two numbers	$x-=$y
*=	Multiplication	To multiply two numbers	$x*=$y
/=	Division	To divide two numbers	$x/=$y
%=	Modulus	To perform modulo division of two numbers	$x%=$y

3.Comparison operators

Operator	Name	Definition	Example
==	is equal to	To check left value is equal to right value	$x==$y
!=	Not equal to	To check left value is not equal to right value	$x!=$y
>	Greater than	To check left value is greater than right value	$x>$y
<	Less than	To check left value is less than the right value	$x<$y
>=	Greater than or equal to	To check left value is greater than or equal to right value	$x>=$y
<=	Less than or equal to	To check left value is less than or equal to right value	$x<=$y
===	Identical	To check left value is identical to right value	$x===$y
!==	Identical	To check left value is not identical to right value	$x!==$y

4.Increment/decrement operator

Operator	Name	Definition
++$x	Pre increment	Increment by one
$x++	Post increment	Increment by one
--$x	Pre decrement	Decrement by one
$x--	Post decrement	Decrement by one

5.Logical operators

Operator	Name	Definition	Example
and	And	Returns true if both $x and $y are true	$x and $y
or	Or	Returns true if any of $x and $y are true	$x or $y
xor	Xor	True if eaither $x or $y is true but not the both	$x xor $y
&&	And	Returns true if both $x and $y are true	$x && $y
||	Or	Returns true if any of $x or $y is true	$x||$y
!	Not	True if $x is false and false if $x is true	!$x

6.String operators

Operator	Name	Definition	Example
.	Concatenation	Concatenation of $x and $y	$x.$y
.=	Concatenation assignment	Append the value of $x with $y and stores in $x	$x.=$y

7.Array Operators

Operator	Name	Definition	Example
+	Union	Union of $x and $y	$x + $y
==	Equality	Returns true if any of $x and $y have same value	$x==$y
===	Identity	Returns true if $x and $y have the same key/value pairs in the same order and of the same types	$x===$y
!=	Inequality	Returns true if $x is not equal to $y	$x!=$y
<>	Inequality	Returns true if $x is not equal to $y	$x<>$y
!==	Non-identity	Returns true if $x is not identical to $y	$x!==$y

8.Conditional operators

Operator	Name	Definition	Example
?:	Ternary	Returns the value of $x. The value of $x is expr2 if expr1 = TRUE. The value of $x is expr3 if expr1 = FALSE	$x = expr1 ? expr2 : expr3
??	Null coalescing	Returns the value of $x. The value of $x is expr1 if expr1 exists, and is not NULL. If expr1 does not exist, or is NULL, the value of $x is expr2.	$x=expr1??expr2

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