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PHP Exercises: Compute the amount of the debt in n months

PHP: Exercise-50 with Solution

Write a PHP program to compute the amount of the debt in n months. The borrowing amount is $100,000 and the loan adds 5% interest of the debt and rounds it to the nearest 1,000 above month by month.

Input:
An integer n (0 ≤ n ≤ 100) .

Sample Solution: -

PHP Code:

<?php
 fscanf(STDIN, '%d', $n);
$debt = 100000;
 
for($i=0; $i<$n; $i++){
  $debt = ceil(($debt * 1.05)/1000) * 1000;
}
echo "\nAmount of debt: ";
echo $debt. PHP_EOL;
?>

Sample Output:

Amount of debt: 137000

Flowchart:

Flowchart: Compute the amount of the debt in n months

PHP Code Editor:

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Previous: Write a PHP program which solve the equation. Print the values of x, y where a, b, c, d, e and f are given.
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PHP: Tips of the Day

Why shouldn't I use mysql_* functions in PHP?

The MySQL extension:

  • Is not under active development
  • Is officially deprecated as of PHP 5.5 (released June 2013).
  • Has been removed entirely as of PHP 7.0 (released December 2015)
  • This means that as of 31 Dec 2018 it does not exist in any supported version of PHP. If you are using a version of PHP which supports it, you are using a version which doesn't get security problems fixed.
  • Lacks an OO interface
  • Doesn't support:
    • Non-blocking, asynchronous queries
    • Prepared statements or parameterized queries
    • Stored procedures
    • Multiple Statements
    • Transactions
    • The "new" password authentication method (on by default in MySQL 5.6; required in 5.7)
    • Any of the new functionality in MySQL 5.1 or later

Since it is deprecated, using it makes your code less future proof.

Lack of support for prepared statements is particularly important as they provide a clearer, less error-prone method of escaping and quoting external data than manually escaping it with a separate function call.

Ref : https://bit.ly/2BIIsF0