Unable to hook into a PHP extension

[gnumoksha]

I'm trying to create an instrumentation code for the phalcon framework, which is a PHP extension, but the hook never works.

hook(
    \Phalcon\Mvc\Application::class,
    'handle',
    function (
        \Phalcon\Mvc\Application $app,
        array        $params,
        string       $class,
        string       $function,
        ?string      $filename,
        ?int         $lineNumber,
    ) {
        // the following will never be executed
        var_dump($app, $params, $class, $function, $filename, $lineNumber);
    }
);

[agoallikmaa]

Which PHP version are you running this on? Hooking internal functions (such as those provided by an extension) is only supported on PHP 8.2+.

[gnumoksha]

Which PHP version are you running this on? Hooking internal functions (such as those provided by an extension) is only supported on PHP 8.2+.

8.1. I'm working on updating the version.

[gnumoksha]

It worked, thank you

[gnumoksha]

Is the exception catch expected to work in the post hook, @agoallikmaa?

[brettmc]

Pre and post hooks are not expected to throw exceptions - if they do, it will be logged and discarded (as of 1.0.1beta2). If the function being hooked throws an exception, then that exception is available in the post hook.

[gnumoksha]

I've tested throwing an exception in a controller, called by the hooked method, and the post hook didn't receive the exception. Instrumenting a PHP code works as expected (i.e. it receives the exception).

[brettmc]

That should definitely work: https://github.com/open-telemetry/opentelemetry-php-instrumentation/blob/main/ext/tests/007.phpt (the exception will be the 4th parameter to the post hook).