Re: try - catch is not so clear to me...

> ________________________________ > From: Lamp Lists <lamp.lists@yahoo.com> > To: php-general@lists.php.net > Sent: Monday, April 13, 2009 9:29:16 AM > Subject: [PHP] try - catch is not so clear to me... > > hi to all! > > actually, the statement in the Subject line is not 100% correct. I understand the purpose and > how it works (at least I think I understand :-)) but to me it's so complicated way? > > let's take a look in example from php.net(http://us3.php.net/try) > > > <?php > function inverse($x) { > if (!$x) { > throw new Exception('Division by zero.'); > } > else return 1/$x; > } > > try { > echo inverse(5) . "\n"; > echo inverse(0) . "\n"; > } catch (Exception $e) { > echo 'Caught exception: ', $e->getMessage(), "\n"; > } > > // Continue execution > echo 'Hello World'; > ?> > I would do the same thing, I think, less complicated: > > <?php > function inverse($x) > { > if (!$x) { > echo 'Division by zero'; > } > else return 1/$x; > > } > > echo inverse(5); > echo inverse(0); > > // Continue execution > echo 'Hello world'; > ?> > > I know this is "too simple, maybe not the best example", but can somebody please > explain "the purpose" of try/catch? > > Thanks. > > -LL another example from php.net <?php try { $connection = mysql_connect(...); if ($connection === false) { throw new Exception('Cannot connect do mysql'); } /* ... do whatever you need with database, that may mail and throw exceptions too ... */ mysql_close($connection); } catch (Exception $e) { /* ... add logging stuff there if you need ... */ echo "This page cannot be displayed"; } ?> compare to: <?php $connection = mysql_connect(...) or die('Cannot connect do mysql'. mysql_error()); ?> -LL