drupal-latest-release-download-link.php

#!/usr/bin/php
<?php

$xml = simplexml_load_file('https://updates.drupal.org/release-history/drupal/8.x');

$latest = null;

foreach($xml->releases->release as $release) {
	if ($release->status != 'published') {
		continue;
	}

	if (property_exists($release, 'version_extra') && $release->version_extra != '') {
		continue;
	}

	if (!isset($latest) || $release->date > $latest->date) {
		$latest = $release;
	}
}

if (isset($latest) && property_exists($latest, 'download_link')) {
	echo $latest->download_link ."\n";
} else {
	error_log("ERROR: Drupal latest release download link not found");
	exit(999);
}

SimpleXMLElement Object
(
    [name] => drupal 8.2.0
    [version] => 8.2.0
    [tag] => 8.2.0
    [version_major] => 8
    [version_minor] => 2
    [version_patch] => 0
    [status] => published
    [release_link] => https://www.drupal.org/project/drupal/releases/8.2.0
    [download_link] => https://ftp.drupal.org/files/projects/drupal-8.2.0.tar.gz
    [date] => 1475660639
    [mdhash] => 5d0c57d2fd6338d60a5e311acc188b44
    [filesize] => 12867786
    [files] => SimpleXMLElement Object
        (
            [file] => Array
                (
                    [0] => SimpleXMLElement Object
                        (
                            [url] => https://ftp.drupal.org/files/projects/drupal-8.2.0.tar.gz
                            [archive_type] => tar.gz
                            [md5] => 5d0c57d2fd6338d60a5e311acc188b44
                            [size] => 12867786
                            [filedate] => 1475660639
                        )

                    [1] => SimpleXMLElement Object
                        (
                            [url] => https://ftp.drupal.org/files/projects/drupal-8.2.0.zip
                            [archive_type] => zip
                            [md5] => 07b04f61b2302d34c21102c790d3ca7a
                            [size] => 21128188
                            [filedate] => 1475660639
                        )

                )

        )

    [terms] => SimpleXMLElement Object
        (
            [term] => Array
                (
                    [0] => SimpleXMLElement Object
                        (
                            [name] => Release type
                            [value] => Bug fixes
                        )

                    [1] => SimpleXMLElement Object
                        (
                            [name] => Release type
                            [value] => New features
                        )

                )

        )

    [security] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [covered] => 1
                )

        )

)