i18n-files-to-temp.js

copy: {
  i18n: {
      files: [
          {
              expand: true,
              cwd: '/project_files',
              src: '**/*.php',
              dest: '/temp',
              rename: (function () {
                  var index = 0;

                  return function (dest, src) {
                      return dest + index++;
                  }
              }())
          }
      ]
  }
}