PHP Exercises: Accepts six numbers as input and sorts them in descending order

Last update on May 27 2025 13:09:27 (UTC/GMT +8 hours)

55. Sort Six Numbers Descending

Write a PHP program that accepts six numbers as input and sorts them in descending order.

Input: Input consists of six numbers n1, n2, n3, n4, n5, n6 (-100000 ≤ n1, n2, n3, n4, n5, n6 ≤ 100000). The six numbers are separated by a space.

Sample Solution:

PHP Code:

<?php
// Read a line of input from STDIN and trim any leading or trailing whitespace
$stdin = trim(fgets(STDIN));

// Explode the input string into an array of integers using space as the delimiter
$nums = explode(" ", $stdin);

// Sort the array of integers in descending order
rsort($nums);

// Print a message indicating the result
print("After sorting the said integers:\n");

// Implode the sorted array into a string, separating elements with a space, and echo the result
echo implode(' ', $nums);
?>

Explanation:

Read Input:

The code reads a line of input from standard input (STDIN) using fgets() and trims any leading or trailing whitespace using trim().

Explode Input into Array:

The input string is split into an array of integers by using the explode() function with a space (" ") as the delimiter.

Sort the Array:

The array of integers is sorted in descending order using the rsort() function.

Print Result Message:

A message indicating the result of the sorting is printed: "After sorting the said integers:\n".

Implode and Output the Sorted Array:

The sorted array is converted back into a string using implode(), where elements are separated by a space. The resulting string is then printed to the output.

Output:

After sorting the said integers:
9 8 7 6 4 2

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to sort six input numbers in descending order without using built-in sort functions.
Write a PHP script to manually implement a sorting algorithm for six numbers using nested loops.
Write a PHP function to take six numeric inputs and output them sorted from highest to lowest using a custom sort.
Write a PHP script to validate and then display six numbers in descending order after user input.

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PHP Code Editor:

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