<?php
class Hook {
  /**
   * The hooks container
   * @var array $hooks
  */
  private $hooks = [];
  
  /**
   * Set {@param->$value} inside {@param->$key}
   * @param string $key
   * @param mixed $value
   * @return void
  */
  public function set(string $key, mixed $value): void {
    $this->hooks[$key][] = $value;
  }
  
  /**
   * Delete the value's inside {@param->$key}
   * @param string $key
   * @return void
  */
  public function unset(string $key): void {
    unset($this->hooks[$key]);
  }
  
  /**
   * Get the list of all the value's inside {@param->$key}
   * @param string $key
   * @return string
  */
  public function get(string $key): string {
    foreach($this->hooks[$key] as $hook) {
      echo $hook;
    }
  }
}
?>