Home >>PHP Tutorial >PHP Assignment Operators

PHP Assignment Operators

Assignment Operators in PHP

There are a few other Operators that tend to do some arithmetic operations
and store the result in same. for eg the addition-assignment operator, represented
by the symbol +=, lets you simultaneously add and assign a new value to a variable.

Common **Assignment** Operators
Operatos	Description
+=	Add and assign
-=	Subtract and assign
*=	Multiply and assign
/=	Divide and assign quotient
%=	Divide and assign modulus
.=	Concatenate and assign(its used only for sting)

and here's example illustrating these operators in action.

Add and assign

 <?php	
	
$x = 500;
	
$x+= 500;
	
echo "sum=".$x."<br/>";

?>

Output sum=1000

In the above example
Initialize variable ($x) with value = 500. If we want to add 500 to this value . we don't need a second and third variable to store the sum of value($x+=500) it means ($x=$x+500 ) .
add 500 and re-assign new value(1000) back to same variable ($x).

Subtract and assign

<?php		
	
$x = 1000;
	
$x-= 500;
	
echo "subtraction = ".$x."<br/>";
  
?>

Output subtraction = 500

In the above example
Create and initialize variable($x) hold value = 1000. now perform subtraction. 500 is subtract from 1000 using($x-=500) it means($x=$x - 500 ) .
Now assign new value back to the initialize variable($x). so the output will become:

Multiply and assign

<?php	
	
$x = 100;
	
$x*= 10;
	
echo "Multiplication = ".$x."<br/>";

?>

Output Multiplication= 1000

In the above example
Variable( $x) with value=100. now perform multiplication. ($x*=10) now value 10 multiply with previous value(100).
and the output will become:1000 and it re-assign back to the variable ($x)
so the output will become : 1000

Divide and assign quotient

<?php	

$x = 1000;

$x/= 500;

echo "Quotient = ".$x."<br/>";
?>

Output Quotient = 2

In the above example.
Declare Variable( $x) with value=1000. now perform divide.($x/=500) now value 500 divide with previous value(1000).
and the output will become:2 and it re-assign value=2, back to the variable ($x).

Divide and assign modulus

<?php	
	
$x = 5;
	
$x%= 2;
	
echo "Remainder = ".$x."<br/>";

?>

Output Remainder= 1

In the above example. Variable($x) with value =5. Now calculate the modulus using ($x%=2) .
it gives remainder value="1" and this remainder assign again to variable($x).
and the output will become : 1

Concatenate and assign

<?php	
	
$str = "Welcome ";
	
$str. = "to the world of phptpoint";
	
echo $str."<br/>";

?>

Output Welcome to the world of phptpoint

In the above example.
Declare variable($str). With string value="Welcome" .
Now concatenate this string to another string using the same variable
by performing ($str.="to the world of php").
It concatenate "welcome" with "to the world of php" and
The output will become this: Welcome to the world of Phptpoint

« Previous Next »

PHP Tutorial PHP Introduction For Beginners PHP Advantage PHP Software Requirement PHP WAMP Installation PHP XAMPP Installation PHP Syntax PHP Comments PHP Variables PHP $ and $$ Variables PHP Super global variables How to swap two numbers in PHP PHP Constant PHP:Magic Constant echo and print in PHP PHP Data Types PHP Form GET Method POST Method Form action PHP Display result in Textbox Multiple submit buttons php different actions Add two textbox values and display the result in third textbox PHP Operators PHP Arithmetic Operators PHP Assignment Operators PHP Comparative Operators PHP Logical Operators PHP Operators Precedence PHP Conditional Statement PHP if Statement PHP if-else Statement PHP if elseif else Statement PHP Switch Statement PHP calculator Profit and Loss What is Loop PHP For Loop Print star pattern in PHP Create table using for loop in PHP PHP While Loop PHP Do While Loop PHP Foreach Loop PHP String PHP Numeric Functions PHP Tutorial PDF For Beginners PHP isset function

PHP Interview Question

PHP Projects

PHP String Functions

PHP Math/Number Functions

No Sidebar ads