I’ll Be Writing PHP Functions In Here Just For Fun!

<?php
function _sprintf(string $format, mixed ...$values): string {
  foreach($values as $key => $value) {
    $format = str_replace('%' . $key, $value, $format);
  }
  return $format;
}
?>

<?php
echo _sprintf('I am %0 and so %1 now!', 'tired', 'hungry'); // returns: I am tired and so hungry now!
?>

<?php
function _search(string $search, array $in): array|string {
  $_search = strtolower($search);
  foreach($in as $key => $value) {
    $_value = strtolower($value);
    if(str_contains($_value, $_search)) {
      $result[$key] = $value;
    }
  }
  if(isset($result) && is_array($result)) {
    return $result;
  } else {
    return 'Ohh no! No search result have been found!';
  }
}
?>

<?php
print_r(_search('Old', ['New Post', 'Old Post', 'New Page', 'Old Page']));
?>