Turn `/hello/world/mr/flibble` into /[hello](/aw/hello)/[world](/aw/hello/world)/[mr](/aw/hello/world/mr)/[flibble](/aw/hello/world/mr/flibble)
```php
<?php

function bread($path) {
  $xs = explode("/",trim($path,"/"));
  $ys = array();
  $z = ""; # accumulate path
  foreach($xs as $x) {
    $z .= "/$x";
    array_push($ys,"[$x]($z)");
  }
  return "/".implode("/",$ys);
}
$test_path = "/hello/world/mr/flibble";
echo bread($test_path);
```