PHP Operators

PHP language has following types of operators.

  • Arithmetic Operators
  • Comparison Operators
  • Logical/Relational Operators
  • Assignment Operators
  • Conditional/ternary Operators

Arithmetic Operators

Operator Description Example
+ Adds two operands A + B will give 30
Subtracts second operand from the first A – B will give -10
* Multiply both operands A * B will give 200
/ Divide numerator by de-numerator B / A will give 2
% Modulus Operator and the remainder of after an integer division B % A will give 0
++ Increment operator, increases integer value by one A++ will give 11
Decrement operator, decreases integer value by one A– will give 9

Comparison Operators

Operator Description Example
== Checks if the value of two operands are equal or not, if yes then condition becomes true. (A == B) is not true.
!= Checks if the value of two operands are equal or not, if values are not equal then the condition becomes true. (A != B) is true.
> Checks if the value of the left operand is greater than the value of right operand, if yes then condition becomes true. (A > B) is not true.
< Checks if the value of the left operand is less than the value of right operand, if yes then condition becomes true. (A < B) is true.
>= Checks if the value of the left operand is greater than or equal to the value of right operand, if yes then condition becomes true. (A >= B) is not true.
<= Checks if the value of the left operand is less than or equal to the value of right operand, if yes then condition becomes true. (A <= B) is true.

Logical Operators

Operator Description Example
and Called Logical AND operator. If both the operands are true then condition becomes true. (A and B) is true.
or Called Logical OR Operator. If any of the two operands are non zero then condition becomes true. (A or B) is true.
&& Called Logical AND operator. If both the operands are non zero then condition becomes true. (A && B) is true.
|| Called Logical OR Operator. If any of the two operands are non zero then condition becomes true. (A || B) is true.
! Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false. !(A && B) is false.

Assignment Operators

Operator Description Example
= Simple assignment operator, Assigns values from right side operands to left side operand C = A + B will assign value of A + B into C
+= Add AND assignment operator, It adds right operand to the left operand and assigns the result to left operand C += A is equivalent to C = C + A
-= Subtract AND assignment operator, It subtracts right operand from the left operand and assigns the result to left operand C -= A is equivalent to C = C – A
*= Multiply AND assignment operator, It multiplies right operand with the left operand and assigns the result to left operand C *= A is equivalent to C = C * A
/= Divide AND assignment operator, It divides left operand with the right operand and assigns the result to left operand C /= A is equivalent to C = C / A
%= Modulus AND assignment operator, It takes modulus using two operands and assigns the result to left operand C %= A is equivalent to C = C % A

Conditional Operator

Operator Description Example
? : Conditional Expression If Condition is true ? Then value X : Otherwise value Y

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