original_string: public function find_all() {
          $this->ensure_path_exists();
          $files = glob($this->glob_keys_pattern(), GLOB_MARK | GLOB_NOSORT);
          $return = array();
          if ($files === false) {
              return $return;
          }
          foreach ($files as $file) {
              $return[] = substr(basename($file), 0, -6);
          }
          return $return;
      }
code: public function find_all() {
          $this->ensure_path_exists();
          $files = glob($this->glob_keys_pattern(), GLOB_MARK | GLOB_NOSORT);
          $return = array();
          if ($files === false) {
              return $return;
          }
          foreach ($files as $file) {
              $return[] = substr(basename($file), 0, -6);
          }
          return $return;
      }
code_tokens: public function find_all ( ) { $ this -> ensure_path_exists ( ) ; $ files = glob ( $ this -> glob_keys_pattern ( ) , GLOB_MARK | GLOB_NOSORT ) ; $ return = array ( ) ; if ( $ files === false ) { return $ return ; } foreach ( $ files as $ file ) { $ return [ ] = substr ( basename ( $ file ) , 0 , - 6 ) ; } return $ return ; }
docstring: Finds all of the keys being used by this cache store instance.
  
  @return array
docstring_tokens: Finds all of the keys being used by this cache store instance .