WordPress - Get start and end date and format them

gistfile1.aw

<?php

// event date
$dstart = get_field('event_date_start');
$dend = get_field('event_date_end');
if (!$dend) {
	$dend = $dstart;
}
$start_year = date("o",strtotime($dstart));
$end_year = date("o",strtotime($dend));
// pretty date formats
$pretty_dstart = date("jS F o",strtotime($dstart));
$pretty_dstart_noyear = date("jS F",strtotime($dstart));
$pretty_dend = date("jS F o",strtotime($dend));
// output
if ($start_year==$end_year&&$dstart!=$dend) {
	$event_start = $pretty_dstart_noyear;
}
else {
	$event_start = $pretty_dstart;
}
if ($dstart!=$dend) {
	$event_end = '&ndash; ' . $pretty_dend . '';
}
?>


<dl>
<dt>Event date</dt>
<dd><?= $mtg_start; ?> <?= $mtg_end; ?></dd>
</dl>