What is PHP Operator?
Operators (its a symbol), which perform operations on variables. example $A + $b = $C. Here "$A" and "$B" are called
variables(operands) But "+" is called
Operator.
PHP supports following type of operators.
- Arithmetic operators
- Assignment operators
- Comparison operators
- Increment/Decrement operators
- Logical operators
Arithmetic operators
In PHP Arithmetic operators are used in numeric values. (Ex- 2+5=7)
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 |
PHP Assignment Operators
PHP assignment operators assign to the value to a variable. (Ex- $x=5, Left operand set to the value on the right. )
Assignment |
Same as... |
Description |
x = y |
x = y |
The left operand gets set to the value of the expression on the right |
x += y |
x = x + y |
Addition |
x -= y |
x = x - y |
Subtraction |
x *= y |
x = x * y |
Multiplication |
x /= y |
x = x / y |
Division |
x %= y |
x = x % y |
Modulus |
PHP Comparison Operators
According to name comparison operators used to compare two values. (Ex- $x == $y)
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 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 $y |
Increment / Decrement Operators
Increment(++) Operators increases integer one(1) at value, and Decrement (--) Operators Decreases integer one(1) at value
Operator |
Name |
Description |
++$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 $x by one |
Logical Operators
Combine conditional statements (Ex- if
($x == 10 and $y == 50))
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 |
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