Display results with a year heading using datetime field

[cb2004]

I am displaying calendar entries by using a datetime field for the start date and I will later be extending it by also displaying an end date. What I wanted to do was have the year as a heading and then all results for that year will be displayed. What I have below is actually working great, I was just wondering if it was a good technique?

$results = $page->children;

if (count($results)) {
	$years = array();

	foreach ($results as $result) {
		$years[] = strftime("%Y", $result->date_1);
	}

	$years_unique = array_unique($years);

	foreach ($years_unique as $year) {
		echo "<h3>{$year}</h3>";
		$start = strtotime(date("$year-01-01") . " 00:00:00");
		$end = strtotime(date("$year-12-31") . " 23:59:59");
		foreach ($page->children("date_1>$start, date_1<$end") as $child) {
			echo "<p>{$child->title}</p>";
		}
	}
}

Cheers all.

[LostKobrakai]

For a pure php implementation this is probably as good as it gets. I would just use >= and <= to also get 1.1. 00:00:00 and 31.12. 23:59:59 dates.

If you've more cases, where you need to work with dates I'd suggest taking a look at Carbon.

[cb2004]

Thank you for your time on this. Just thought I would post it as I couldn't find anything similar on the forum so it may help future users.

[Macrura]

some of these might be applicable:

https://processwire.com/talk/topic/9486-movie-website-session-times-by-day/

https://processwire.com/talk/topic/4991-sub-arrays-dates-times-and-pure-hell/

also sometimes i avoid having to use the array_unique by using the value as the key