array(2) {
  ["dir"]=>
  string(32) "books/docs/doc/syncstarter/pasap"
  ["file"]=>
  string(28) "musl/musl-dyne-arm_hf.tar.xz"
}
string(69) "/books/docs/doc/syncstarter/pasap?file=musl%2Fmusl-dyne-arm_hf.tar.xz"