PHP subtracting two numbers-PHP program

In this tutorial, we will discuss the concept of PHP subtracting two numbers-PHP program

In this topic, we are going to learn how to write a program to subtract two numbers in PHP programming language

Find Difference of two numbers

Find difference of two numbers – #1

In this program, the user declare two integer variables $x and $y. Then two numbers are subtracted using minus(-) operator. finally the result is displayed on the screen

Program 1

<?php
$num1=30;
$num2=15;
$sum=$num1-$num2;
echo "Difference: ".$sum;
?>

When the above code is executed, it produces the following result

Difference: 15

Find difference of two numbers – entered by user

In this program, the user asked to enter two numbers(by passing input value to form). Then two numbers are subtracted using + operator and the result is displayed on the screen

Program 2

<html>
<body>
<form method = "post">
Enter 1st number
<input type = "number" name="number1"/><br><br>
Enter 2nd number
<input type = "number" name="number2"/><br><br>

<input type = "submit" name="submit" value="Sub"/><br>
</form>

<?php
if(isset($_POST['submit']))
{
    $number1=$_POST['number1'];
    $number2=$_POST['number2'];
    $sub=$number1 - $number2;
    echo "The Difference of $number1 and $number2 is: ".$sub;
    
}

?>

</body>
</html>

When the above code is executed, it produces the following result

Find difference of two numbers – without + operator

In this program, the user asked to enter two numbers(by passing input value to form). Then two numbers are added using without + operator and the result is displayed on the screen

Program 3

<body>
<form>
Enter 1st number
<input type = "number" name="number1"/><br><br>
Enter 2nd number
<input type = "number" name="number2"/><br><br>

<input type = "submit" name="submit" value="Sub"/><br>
</form>
</body>

<?php
    @$number1=$_GET['number1'];
    @$number2=$_GET['number2'];
    for($i=1; $i<=$number2; $i++){
        $number1--;
    }
    echo "Difference is: ".$number1;
?>

When the above code is executed, it produces the following result