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Date: Thu, 19 May 2016 20:47:41 +0100
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Subject: Re: [PHP-DEV] Exception::getLine()
From: rowan.collins@gmail.com (Rowan Collins)

On 19/05/2016 19:35, Rasmus Schultz wrote:
> Technically, every throw is a new exception "flow" - even if you're > recycling the Exception instance, it's the throw statement that > 
starts the unique stack unwind from the throw site; it's where the > 
action happens.

That's one interpretation, but it doesn't really hold up in all cases. 
Consider a catch statement that needs to filter more granularly than the 
class name; since you already mentioned PDO, I'll make an example with that:

catch ( PDOException $e ) {
     if ( substr($e->getCode(), 0, 2) === '08' ) {
         $this->reconnect();
     } else {
         throw $e;
     }
}

Of what value to a subsequent catch statement is the trace of that throw 
statement? And why does that "start a new exception flow", but if PDO 
threw different sub-classes, you could let one flow through unmodified 
by tightening the catch statement?

Regards,
-- 
Rowan Collins
[IMSoP]