PHP Subtracting Two Numbers

Syntax

The syntax for subtracting two numbers in PHP is as follows:

$difference = $num1 - $num2;

Example

Here is an example of subtracting two numbers in PHP:

$num1 = 10;
$num2 = 5;
$difference = $num1 - $num2;
echo "The difference between $num1 and $num2 is: $difference";

Output

When running the code above, the output should be:

The difference between 10 and 5 is: 5

Explanation

The code defines two variables, $num1 and $num2, with values of 10 and 5 respectively. It then subtracts $num2 from $num1 and stores the result in $difference. Finally, it echoes a string that includes the result of the subtraction.

Use

Subtracting two numbers is a common operation in many PHP applications. It is used when calculating differences between numbers, such as finding the change owed after a purchase or calculating a budget shortfall.

Important Points

• Subtraction in PHP is done using the - operator.
• The result of a subtraction operation is stored in a variable.
• The echo statement is used to output the result of the subtraction operation.

Summary

Subtracting two numbers in PHP involves using the - operator to subtract one number from another and storing the result in a variable. The result can then be used in calculations or output to the user.