Is there a pretty print for PHP?

Answer 1

If your server objects to you changing headers (to plain text) after some have been sent, or if you don't want to change your code, just "view source" from your browser--your text editor (even notepad) will process new lines better than your browser, and will turn a jumbled mess:

Array ( [root] => 1 [sub1] => Array ( ) [sub2] => Array ( ) [sub3] => Array ( ) [sub4] => Array ( ) ...

into a properly tabbed representation:

[root] => 1
  [sub1] => Array
      (
      )

  [sub2] => Array
      (
      )

  [sub3] => Array
      (
      )

  [sub4] => Array
      (
      )...