PHP: 'or' statement on instruction fail: how to throw a new exception?

Question

Everyone here should know the \'or\' statemens, usually glued to an die() command:

$foo = bar() or die(\'Error: bar function return false.\');

Answer 1

Why don't bar() and bb() throw the exceptions? In PHP Exceptions bubble up, so there's no need to throw the exception in the function/method where you call bar()/bb(). These exceptions may be thrown by bar()/bb(). In case you want to throw another exception, you can simply do:

function foo() {
    try {
        $bar = bar();
    } catch (BarException) {
        throw new FooException;
    }
}