array(2) {
  ["dir"]=>
  string(30) "books/docs/doc/syncstarter/app"
  ["file"]=>
  string(33) "musl/cross-alpine-riscv_64.tar.xz"
}
string(72) "/books/docs/doc/syncstarter/app?file=musl%2Fcross-alpine-riscv_64.tar.xz"