Operators in PHP

The most common PHP operators are 

1. Assignment operators,
2. Arithmetic operators, 
3. combined operators, 
4. comparison operators, 
5. logical operators. 
6. Relational Operators
7. Increment and Decrement Operator
8. Negation Operator
9. Error Controlling operator
10. String/Concatenation operator
11. Conditional(or) Ternary Operator
12. "new" Operator
13. "instanceOf" operator
14. Scope resolution operator
15. Dereferencing operator

Assignment Operators

The basic assignment operator in PHP is "=". This means that the operand to the left of "=" gets set to the value to the right of "=".

Arithmetic Operators

Operator	Example	Result
+	4 + 2	6
-	4 - 2	2
*	4 * 2	8
/	4 / 2	2
%	4 % 2	0
++	x = 4; x++;	x = 5
--	x = 4; x--;	x = 3

Combined Operators

You can combine an arithmetic operator with the assignment operator to form a combined operator. Combined operators are shown below:

Operator	Example	Meaning
+=	y += x	y = y + x
-=	y -= x	y = y - x
*=	y *= x	y = y * x
/=	y /= x	y = y / x
%=	y %= x	y = y % x

Comparison Operators

Operator	Meaning
==	is equal to
!=	is not equal to
>	is greater than
>=	is greater than or equal to
<	is less than
<=	is less than or equal to

Logical Operators

Operator	Meaning
||	or
&&	and
and	and
or	or
xor	xor
!	not

Relational Operators
= = = will check for the content and also for the type.
! = =  


Increment and Decrement Operator


++ and - -


Negation Operator


- multiplying with (-1)


Error Controlling Operator:


@   when prepended an expression, any warning messages that is being generated will gets suppressed.


A PHP application is associated with two types of runtime mistakes:

• Warning - if  warning occurs, the rest of the Programme  will be executed.
• A Fatal error - if a fatal error occurs the Programme gets terminated.

String/concatenation operators:

. or .=

Conditional / ternery operator:   ?: