what is the recommended way to check error in rest api? [duplicate]

This question already has an answer here:

• PHP Exceptions VS Return usage in Functions (best practice) 2 answers
• Which, and why, do you prefer Exceptions or Return codes? 23 answers

We are building Rest API, but we're not able to decide how we should show the errors, what is more common and easy to use.

1)

$request = class->function();
try{
//success
}catch(Exception $e){
echo $e->getMessage();
}

vs

$request = class->function();
if($request['status']){
//success
}else{
echo $request['error']['message'];
}

2) If we decide to go with if/else then which key is more common, and easy to use? $request['status'] or $request['state'] or something you can recommend.

We also looked for best practices of designing API but none of them mentioned this case.