[SOLVED] Problem with path hooks

[dotnetic]

I added this example code taken from ProcessWire 3.0.173 core updates: New URL hooks to my site/_init.php 

// _init.php
wire()->addHook('/hello/world', function($event) {
  return 'Hello World';
});

and get the following error:

So what is wrong? As I am in the _init.php the hook should be attached during init, right?

[bernhard]

No ? 

_init.php is the file that you PREpend to the template rendering (just like _main.php is APpended).

/site/init.php and /site/ready.php are something different and the place where you want to attach your hook.

[dotnetic]

Thanks @bernhard. Problem solved