[PHP] try - catch is not so clear to me...

[Lamp Lists]

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