code: public static function cleanCompileDir()
      {
          $total = 0;
          $compileDir = getenv(self::COMPILE_DIR) ?: sys_get_temp_dir();
          foreach (glob("{$compileDir}/jmespath_*.php") as $file) {
              $total++;
              unlink($file);
          }
  
          return $total;
      }
docs: Delete all previously compiled JMESPath files from the JP_COMPILE_DIR
  directory or sys_get_temp_dir().
  
  @return int Returns the number of deleted files.