Function to subtract two numbers in PHP

Function to subtract two numbers in PHP

In this tutorial, we will discuss the concept of Function to subtract two numbers in PHP

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

Find Difference of two numbers

Find difference of two numbers using function – #1

In this program, the user declare two integer variables $x and $y as parameters of the user defined function. Then two numbers are subtracted first value from second value using minus(-) operator. finally when the user call the function with argument, the result is displayed on the screen

Program 1

<?php //php script
//function definition
function subTwoNumbers($x, $y)
{
    return $x - $y;//calculate the difference using minus
}
//Calling the function and print result
echo "The difference of 200 and 30: ".subTwoNumbers(200,30);
echo "<br>";
echo "The difference of 20 and 30: ".subTwoNumbers(20,30);
echo "<br>";
echo "The difference of 10 and 110: ".subTwoNumbers(10,110);
echo "<br>";
echo "The difference of -100 and -80: ".subTwoNumbers(-100,-80);
echo "<br>";
//exit php
?>

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

The difference of 200 and 30: 170
The difference of 20 and 30: -10
The difference of 10 and 110: -100
The difference of -100 and -80: -20

 

 

Find difference of two numbers using function – #2

In this program, the user declare two integer variables $x and $y as parameters of the function. Then two numbers are subtracted first value from second value using minus(-) operator. finally when the user call the function with argument, the result is displayed on the screen

Program 2

<?php //php script
//function definition
function subTwoNumbers($x, $y)
{
    $sub=$x - $y;
    //calculate difference using minus operator
    return $sub;//return the result
    echo $sub;//print the result when calling the function
}

//Calling the function and print result
echo "The Difference of 20 and 300: ";
echo subTwoNumbers(20,300);
echo "<br>";
echo "The Difference of 200 and 120: ";
echo subTwoNumbers(200,120);
echo "<br>";
echo "The Difference of 10 and -190: ";
echo subTwoNumbers(10,-190);
echo "<br>";
//exit php
?>

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

The Difference of 20 and 300: -280
The Difference of 200 and 120: 80
The Difference of 10 and -190: 200

 

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