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Subject: Re: [PHP-DEV] exceptions instead of errors
From: tk.lists@fastmail.fm (Terence)

some questions

Daniel Lorch wrote:
> hi,
> 
> 
>>Just a note that I'd really like to see this.  One of the great things
>>about exceptions will be:
>>
>>try {
>>  $m = mysql_connect("localhost", "user", "pass");
>>  $sth = mysql_query("select bar from foo", $m);
>>  while ($row = mysql_fetch_array($sth)) {
>>    echo $row[0];
>>  }
>>  mysql_close($m);
>>} catch (exception $e) {

Is "exception" class built in? if so, extendable by users?
if not, how does getMessage() know where to find the error - especially 
if this error is produced by an extension.

>>  echo $e->getMessage();
>>}
>>
>>This allows you to remove all the nasty if ($conn) could, and move your
>>error handling into a singular place. [..]
> 
> 
> Read more here:
> 
>   http://java.sun.com/docs/books/tutorial/essential/exceptions/definition.html
> 

And reading the article, one can see that it relys on types to bubble up 
and be cought correctly.

> Basically try/catch-statements allow you to keep the main code block short
> and readable because the error handling code is moved somewhere else. Would
> be nice seeing this in PHP.
> 
> -daniel