Event listing (php)

global $post;
$myposts = get_posts($eventsArgs);
$array = array();

foreach($myposts as $post) : setup_postdata($post);
    $values = array(
        'date' => get_post_meta($post->ID, 'event_date_start', true),
        'name' => get_the_title(),
        'url' => get_permalink()
    );
    array_push($array, $values);
endforeach;

$i = 0;
foreach($array as $item) {

    /* Item values */
    $eventName = $item['name'];
    $eventDate = $item['date'];
    $eventURL = $item['url'];

    /* Comparison values */
    $thisDate = substr($array[$i]['date'], 0,-2);
    $nextDate = substr($array[$i+1]['date'], 0,-2);
    $prevDate = substr($array[$i-1]['date'], 0,-2);

    /* Rewrite dates */
    $timestamp = strtotime($eventDate);
    $humanDate = ucwords(strftime("%B %Y",strtotime(date("F Y", $timestamp))));
    $ISOFullDate = date("Y-m-d", $timestamp);
    $ISOPartialDate = date("Y-m", $timestamp);

    /* Print it */
    if($thisDate !== $prevDate) { echo "<h3>$humanDate</h3><ul data-eventsmonth='$ISOPartialDate' class='eventsGroup'>"; }
    echo "<li data-eventdate='$ISOFullDate'> <a href='$eventURL' title='$eventName'>$eventName</a> ($ISOFullDate)</li>";
    if($thisDate !== $nextDate) { echo "</ul>"; }

    ++$i;
}