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vendor/yiisoft/yii2/caching/FileDependency.php 1.35 KB
abf1649b   andryeyev   Чистая установка ...
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  <?php
  /**
   * @link http://www.yiiframework.com/
   * @copyright Copyright (c) 2008 Yii Software LLC
   * @license http://www.yiiframework.com/license/
   */
  
  namespace yii\caching;
  
  use Yii;
  use yii\base\InvalidConfigException;
  
  /**
   * FileDependency represents a dependency based on a file's last modification time.
   *
   * If the last modification time of the file specified via [[fileName]] is changed,
   * the dependency is considered as changed.
   *
   * @author Qiang Xue <qiang.xue@gmail.com>
   * @since 2.0
   */
  class FileDependency extends Dependency
  {
      /**
       * @var string the file path or path alias whose last modification time is used to
       * check if the dependency has been changed.
       */
      public $fileName;
  
  
      /**
       * Generates the data needed to determine if dependency has been changed.
       * This method returns the file's last modification time.
       * @param Cache $cache the cache component that is currently evaluating this dependency
       * @return mixed the data needed to determine if dependency has been changed.
       * @throws InvalidConfigException if [[fileName]] is not set
       */
      protected function generateDependencyData($cache)
      {
          if ($this->fileName === null) {
              throw new InvalidConfigException('FileDependency::fileName must be set');
          }
  
          return @filemtime(Yii::getAlias($this->fileName));
      }
  }