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PHP Operators


PHP Operators are used to perform operations on operands. Operands can be a variable or a constant. The operators are divided into various groups on the basis of the basic operations they perform.

Arithmetic Operators: 

The operators which are used to perform the arithmetical operations, are grouped together as Arithmetic operators.

Operators Symbol
Addition +
Subtraction
Multiplication *
Division /
Modulus %
Exponentiation **

 

Assignment Operators: 

The operators which are used to assign values to a variable, are grouped together as Assignment operators.

Operators Symbol
Equals To =
Added Value +=
Subtracted Value -=
Multiplicated Value *=
Divided Value /=
Modulus Value %=

 

Comparison Operators: 

The operators which are used to compare two values, are grouped together as Comparison operators.

Operators Symbol
Equal ==
Identical ===
Not equal !=, <>
Not identical !==
Greater than >
Less than <
Greater than or equal to >=
Less than or equal to <=

 

Increment/ Decrement Operators: 

The operators which are used to increment or decrement the value of a variable, are grouped together as Increment and Decrement operators.

Operators Symbol
Pre-Increment ++$x
Post-Increment $x++
Pre-Decrement –$x
Post-Decrement $x–

 

Logical Operators: 

The operators which are used to perform logical operations, are grouped together as Logical operators.

Operators Symbol
AND And, &&
OR Or, ||
XOR xor
NOT !

 

String Operators: 

The operators which are used to perform operations on string, are grouped together as String operators.

Operators Symbol
Concatenation .
Concatenation assignment .=

 

Array Operators: 

The operators which are used to perform operations on array, are grouped together as Array operators.

Operators Symbol
Union +
Equality ==
Identity ===
Inequality !=, <>
Non-Identity !==

Example:

<!DOCTYPE html>
<html>
<body>
 
<?php
$txt1 = "Sum of 1234 and 4321 is:";
$txt2 = “Difference of 1234 and 4321 is:";
$txt3 = “Product of 1234 and 4321 is:";
$txt4 = “Quotient of 1234 and 4321 is:";
 
$x = 1234;
$y = 4321;
 
echo "<h3>" . $txt1 . "</h3>";
echo $x + $y;
 
echo "<h3>" . $txt2 . "</h3>";
echo $x - $y;
 
echo "<h3>" . $txt3 . "</h3>";
echo $x * $y;
 
echo "<h3>" . $txt4 . "</h3>";
echo $x / $y;
 
?>
 
</body>
</html>
Posted in PHP   


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