The last row changes behaviour of var_dump() when xdebug is installed. It does not output whole arrays, but max 3 levels. Read [here](https://www.php.net/manual/es/function.var-dump.php) or [here](https://xdebug.org/docs/display).
Quotes were not important. I didnt even need to [download](https://xdebug.org/download) current version of xdebug, it was already in folder C:\xampp\php\ext.
Then you just add a breakpoint, click the debug-play button in NetBeans and refresh your browser. Netbeans will stop the code for you.