Notice: Undefined offset error when there are no voice events logged

[huijing]

Upon first set up on localhost, and hence no voice events logged, the following errors show up when the index page is loaded in the browser.

Notice: Undefined offset: 1 in /Users/hchen/Sites/voice-event-logger/public/index.php on line 59

Notice: Undefined offset: 2 in /Users/hchen/Sites/voice-event-logger/public/index.php on line 60

Notice: Undefined offset: 3 in /Users/hchen/Sites/voice-event-logger/public/index.php on line 63

Warning: Invalid argument supplied for foreach() in /Users/hchen/Sites/voice-event-logger/public/index.php on line 65