Where to catch exceptions in a MVC framework

Everyone talks about how important exception handling is. I have never had the need to handle them until recently:

try {
$pdo = new PDO($dns);
} catch (Exception $e) {
throw new Exception($e);
}

Another more general example would be:

if ($something) {
throw new Exception('Ouch! I can't do that!');
}

After a little online research, I found that many examples/solutions online simply echo them. (

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) Some don't have solutions. (

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) & (

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) And others, I just dont understand. (

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**Question #1:** Where should I catch exceptions; in the Model or Controller of a **MVC**ish framework?

**Question #2:** What should catching it do? Log it, email it, display 503?

I am a .net guy and for me best practices for catching exceptions:

- Catch it as late as possible.
- Write a common code to catch exception.
- Catch it at controller level and log it somewhere with complete stack trace (ETW, Log file, DB etc.).
- Redirect user to some good looking error page. Only controller can do this.