A very customizable FizzBuzz solution

main.php

<?php

$divider_flags = [
    3 => "three",
    5 => "five",
    7 => "hello"
];

# Order of this array is preserved
$flag_correspondences = [
    "hello" => "Scrumptious",
    "three" => "Fizz",
    "five" => "Buzz",
];
    
for ($i = 1; $i < 22; $i++) {
    $flags = [];

    foreach ($divider_flags as $divider => $flag) {
        if ($i % $divider == 0) {
            array_push($flags, $flag);
        }
    }

    $text = join("", array_intersect_key($flag_correspondences, array_flip($flags)));
    
    if (empty($text)) {
        $text .= $i;
    }

    echo $text . "\n";
}