Find Simple Interest Through User Input using HTML
In a more interactive scenario, you might want to calculate simple interest based on user input. This can be done using an HTML form to get the principal, rate and time as input and PHP to process the input.
Example: Illustration of program to find Simple Interest in PHP through User Input using HTML.
HTML
<!DOCTYPE html> <html> <head> <title>Simple Interest Calculator</title> </head> <body> <form action="" method="post"> <table> <tr> <td><label for="principal">Principal:</label></td> <td><input type="text" id="principal" name="principal"></td> </tr> <tr> <td><label for="rate">Rate (%):</label></td> <td><input type="text" id="rate" name="rate"></td> </tr> <tr> <td><label for="time">Time (years):</label></td> <td><input type="text" id="time" name="time"></td> </tr> <tr> <td><input type="submit" value="Calculate"></td> </tr> </table> </form> <?php if (isset($_POST['principal']) && isset($_POST['rate']) && isset($_POST['time'])) { $principal = $_POST['principal']; $rate = $_POST['rate']; $time = $_POST['time']; $interest = ($principal * $rate * $time) / 100; echo "<p>Simple Interest: $interest</p>"; } ?> </body> </html> |
Output
Time Complexity: O(1)
Auxiliary Space: O(1)
PHP Program to Find Simple Interest
Simple interest is the method to calculate the interest where we only take the principal amount each time without changing it for the interest earned in the previous cycle.
The formula to calculate Simple Interest is –
SI = P * R * T / 100
Where –
- I is the interest.
- P is the principal amount.
- R is the rate of interest per annum.
- T is the time in years.
In this article, we will explore how to calculate simple interest in PHP using different approaches.
Table of Content
- Using Inline Calculation
- Using a Function
- Through User Input using HTML
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