<style>
    .letter {
        text-transform: uppercase;
    }
</style>
<?php
error_reporting(0);
/*
Challenge: An array that contains names, find all names that start for ex with 'a',
split them in sections and display all the name that start with 'a' on its own section
if there is not a section ex 'c' don't display it
*/
$names = ['Zenel', 'Burim', 'Arlind', 'Besart', 'Kastriot', 'Zana', 'Ajete', 'Vleran', 'Arben', 'Jeton', 'Jeta', 'Aulonë', 'Astrit'];
$sortedNames = [];
$lettersAlphabet = range('a', 'z');
$letters = [];

$j = -1;

sort($names);
foreach($names as $key => $n) {
    $firstLetter = strtolower(substr($n, 0, 1));

    $sortedNames[$firstLetter] = $n;

    $letters[] = $firstLetter;

    if ($letters[$j] != $firstLetter) {
        $letters[$j] = $firstLetter;
        echo "Names starting with: <strong class='letter'>{$letters[$j]}</strong> <br />";
    }
    echo "{$sortedNames[$firstLetter]} <br />";
}