Test installer manifest dates, report dates and releases since last mod date

test-manifest-dates.php

<?php
$url     = "http://cdn.mysql.com/windows/installer/manifest.zip";
$headers = get_headers($url, true);

if ($headers && false !== strpos($headers[0], '200') && !empty($headers['Last-Modified'])) {
	$lastmod = new \DateTime($headers['Last-Modified']);
	$today   = new \DateTime;
	
	$daysold = $lastmod->diff($today)->days;
	$s = ($daysold === 1) ? 's' : '';

	echo "Manifest was last updated {$daysold}{$s} days ago on " . $lastmod->format("Y-m-d") . PHP_EOL;
	echo "Today is: " . $today->format("Y-m-d") . PHP_EOL;
	
	echo "Releases since manifest was last updated" . PHP_EOL;
	get_last_releases_since_date($lastmod);
}

function get_last_releases_since_date($date, $max = 30) {
	$url = "http://dev.mysql.com/downloads/rss.php";
	$rss = simplexml_load_file($url);
	
	$i = 1;
	foreach($rss->channel->item as $item) {
		if ($i++ < $max) {
			$release_date = new \DateTime($item->pubDate);
			$interval     = $release_date->diff($date);
			
			if ($interval->invert === 1) {
				echo $item->description . PHP_EOL;
			} else {
				break;
			}
		}
	}
}