How to throw a PHP Exception from Go

I've been reading https://frankenphp.dev/docs/extensions/ page and I am trying to build a PHP extension entirely in Go. So far, the type mapping for strings and integers works great.

However, I can't find a way to make a function throw a PHP Exception when something goes wrong in the Go logic.

If a Go function fails, I want to handle it with a standard PHP try/catch block:

try {
    repeat_this('hello', -1); 
} catch (Exception $e) {
    echo "Caught: " . $e->getMessage(); // Should show the error from Go
}

Is there a way to trigger a PHP exception from within the Go function?

Start with the extensions documentation at frankenphp.dev/docs/extensions/ and trace how Go extension functions report failures to PHP. Document the supported path, if one exists, and verify that the example's PHP try/catch behavior is accurately described.