I've tested this and it works fine, but it looks... weird... to me. Should I be concerned that this is nonstandard form which will be dropped in a future version of PHP, or that it may stop working? I've always had a default case as the final case, never as the first case...
switch($kind)
{
default:
// The kind wasn't valid, set it to the default
$kind = 'kind1';
// and fall through:
case 'kind1':
// Do some stuff for kind 1 here
break;
case 'kind2':
// do some stuff for kind2 here
break;
// [...]
case 'kindn':
// do some stuff for kindn here
break;
}
// some more stuff that uses $kind here...
(In case it's not obvious what I'm trying to do is ensure $kind is valid, hence the default: case. But the switch also performs some operations, and then $kind is used after the switch as well. That's why default: falls through to the first case, and also sets $kind)
Suggestions? Is this normal/valid syntax?
It is an unusual idiom, it causes a little pause when you're reading it, a moment of "huh?". It works, but most people would probably expect to find the default case at the end:
switch($kind)
{
case 'kind2':
// do some stuff for kind2 here
break;
// [...]
case 'kindn':
// do some stuff for kindn here
break;
case 'kind1':
default:
// Assume kind1
$kind = 'kind1';
break;
}