Array
(
    [0] => pdf_mode1=yes
    [1] => pdf_mode2=no
    [2] => theme=dark
    [3] => timeout=30
)
--->>> pdf_mode1=yes<br>--->>> pdf_mode2=no<br>--->>> theme=dark<br>--->>> timeout=30<br>array(4) {
  ["pdf_mode1"]=>
  string(3) "yes"
  ["pdf_mode2"]=>
  string(2) "no"
  ["theme"]=>
  string(4) "dark"
  ["timeout"]=>
  string(2) "30"
}