Юрий Есин

var hash = window.location.hash;
var selectedOption = null;

if (hash && hash != '#') {
  var parts = hash.split('=');

  if (parts.length == 2 && parts[0] == "select_option") {
    selectedOption = parts[1];
  }
}

label {
  display: inline-block;
  vertical-align: middle;
  width: 45%;
  box-sizing: border-box;
}

input:not([type="radio"]) {
  display: block;
  width: 100%;
}

$show_info = fopen('events/kp1/dungeon1.txt', 'r');
fgets($show_info);
echo fgets($show_info);
fclose($show_info);

function readLine($pathToFile, $index = 0) {
  if (!file_exists($pathToFile)) {
    return null;
  }

  $stream = fopen($pathToFile, 'r');
  $line = null;

  for ($i = 0; $i <= $index; $i++) {
    if ($index > 0) {
      fgets($stream);
    }

    if ($i == $index) {
      $line = fgets($stream);
    }
  }

  fclose($stream);
  return $line;
}

echo readLine('events/kp1/dungeon1.txt', 1);    // Выведет вторую строку файла.

class Hook {
  protected $callbacks;

  public function __construct($callbacks = []) {
    $this->callbacks = [];

    if (!isset($callbacks) || !is_array($callbacks) || sizeof($callbacks)) {
      return;
    }

    foreach ($callbacks as $k => $v) {
      if (!is_string($k) || !isset($v) || !is_callable($v)) {
        continue;
      }

      $this->callbacks[$k] = $v;
    }
  }

  public function add($key, $callback) {
    if (!isset($key) || !isset($callback) || !is_string($key) || !is_callable($callback)) {
      return;
    }

    $this->callbacks[$key] = $callback;
  }

  public function remove($key) {
    if ($this->exists($key)) {
      unset($this->callbacks[$key]);
    }
  }

  public function exists($key) {
    return isset($key) && array_key_exists($key, $this->callbacks);
  }

  public function run($key, ...$args) {
    if ($this->exists($key)) {
      $func = $this->callbacks[$key];

      if (!isset($args) || !is_array($args)) {
        $args = [];
      }
      
      if (isset($func)) {
        $func(...$args);
      }
    }
  }
}

$hook = new Hook();
$hook->add("my_hook", function ($args) {
  // todo
});

$hook->run("my_hook");
$hook->run("my_hook", 1, "string", true);

.menu .menu_item {
  border-left: 1px solid #c0c0c0;
}

.menu .menu_item:first-child {
  border-left: 0 none;
}

.menu .menu_item {
  border-right: 1px solid #c0c0c0;
}

.menu .menu_item:last-child {
  border-right: 0 none;
}

$bom = pack("H*", "EFBBBF");
$string = preg_replace("/^$bom/", '', $string);

if (!isset($arr) || !is_array($arr) || sizeof($arr) == 0) { return false; }