original_string: public function remove($key)
      {
          $file = $this->getFileName($key);
  
          if ( !file_exists($file) )
          {
              return false;
          }
  
          unset(static::$keys[$key]);
  
          return (unlink($file))? true : false;
      }
code: public function remove($key)
      {
          $file = $this->getFileName($key);
  
          if ( !file_exists($file) )
          {
              return false;
          }
  
          unset(static::$keys[$key]);
  
          return (unlink($file))? true : false;
      }
code_tokens: public function remove ( $ key ) { $ file = $ this -> getFileName ( $ key ) ; if ( ! file_exists ( $ file ) ) { return false ; } unset ( static :: $ keys [ $ key ] ) ; return ( unlink ( $ file ) ) ? true : false ; }
docstring: Remove cache key
  
  @param string $key
  @return bool
docstring_tokens: Remove cache key