" . substr($word, 0, 1) . "" . substr($word, 1);
} elseif ( $count == 4 ) {
// If there are == 4 letters, two letters are bold.
return "" . substr($word, 0, 2) . "" . substr($word, 2);
} elseif ( $count > 4 ) {
// If there are > 4 letters, 40% of all letters are bold.
$ch = $count / 100 * 40;
$c = (int)$ch;
return "" . substr($word, 0, $c) . "" . substr($word, $c);
} else {
return $word;
}
}
$output = array_map(function($word) {
$word = preg_replace_callback('/\w+/i', 'style', $word);
return $word;
}, $arr);
echo join($output, " ");
?>