PHP - assignment operators example

The example below shows the usage of assignment and compound assignment operators:

= Assignment operator
+= Addition AND assignment operator
-= Subtraction AND assignment operator
*= Multiply AND assignment operator
/= Division AND assignment operator
**= Exponent AND assignment operator
%= Modulo AND assignment operator

<?php
$a = 25;

echo "a = $a\n";

//Addition AND assignment operator
$a += 5;
echo "\$a += 5; makes a = $a\n";

//Subtraction AND assignment operator
$a -= 8;
echo "\$a -= 8; makes a = $a\n";

//Multiply AND assignment operator
$a *= 4;
echo "\$a *= 4; makes a = $a\n";

//Division AND assignment operator
$a /= 8;
echo "\$a /= 8; makes a = $a\n";

//Exponent AND assignment operator
$a **= 2;
echo "\$a **= 2; makes a = $a\n";

//Modulo AND assignment operator
//returns remainder of integer division
$a %= 7;
echo "\$a %= 7; makes a = $a\n";
?>

The output of the above code will be:

a = 25
$a += 5; makes a = 30
$a -= 8; makes a = 22
$a *= 4; makes a = 88
$a /= 8; makes a = 11
$a **= 2; makes a = 121
$a %= 7; makes a = 2

❮ PHP - Operators