Switch not going to last case

PHP Code:

$diff =  time() - $questions_userinfo['online'];

if($diff >= 600) {
    $class = 'text-danger';
    $text = '[OFFLINE]';
} else if($diff >= 300) {
    $class = 'text-warning';
    $text = '[AWAY]';
} else if($diff >= 0) {
    $class = 'text-success';
    $text = '[ONLINE]';
} 

$data['online'] = '<span class="'.$class.'">'.$text.'</span>'; 


Thank you. And thanks to all others who helped. This worked fine.

There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!