PHP Array Exercises : Sort entity letters

Last update on December 20 2024 10:17:01 (UTC/GMT +8 hours)

Write a PHP function to sort entity letters.

Sample Solution:

PHP Code:

<?php
// Define a function to sort an array of entities
function entity_sort($my_array) {
    // Iterate through each element in the array
    foreach ($my_array as &$element) {
        // Check if the element is not empty
        if (!empty($element)) {
            // Prepend the element with its first character
            $element = $element[0] . $element;
        }
    }
    // Sort the modified array
    sort($my_array);
    // Iterate through each element in the array
    foreach ($my_array as &$element) {
        // Remove the first character from each element
        $element = substr($element, 1);
    }
    // Return the sorted array
    return $my_array;
}
// Create an array containing space, "&", and ">"
$arr = array(" ", "<", "&");
// Call the entity_sort function and print the result
print_r(entity_sort($arr));
?>

Output:

Array ( [0] => [1] => & [2] => < )

Flowchart:

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a PHP script to sort an array using case-insensitive natural ordering.
Next: Write a PHP function to shuffle an associative array, preserving key, value pairs.