Cron this every minute or two on a server with PHP installed, to post every new hottest 100 track to a Slack channel

hottest100.php

<?php

// ********************* START CONFIGURATION *********************

// Set up an incoming webhook at https://YOURDOMAIN.slack.com/apps/manage/custom-integrations
define( 'SLACK_INCOMING_WEBHOOK', 'https://hooks.slack.com/services/TXXXXXXXX/XXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXX' );

// Set your data folder, which is used to prevent multiple notifications for the same song :)
define( 'DATA_FOLDER', './hottest100-data' );

// ********************* END CONFIGURATION *********************

// Ensure data folder exists
if ( ! is_dir( DATA_FOLDER ) ) {
	mkdir( DATA_FOLDER, 0777, true );
}

$xml = simplexml_load_file( 'http://www.abc.net.au/triplej/feeds/playout/triplej_sydney_playout.xml' );
foreach( $xml->items->item as $song ) {

	if ( ! $song->playedtime || ! $song->title ) {
		return;
	}

	$filename = DATA_FOLDER . '/' . base64_encode( $song->playedtime ) . '.played';

	if ( ! file_exists( $filename ) ) {

		touch( $filename );

		$payload = array (
			'attachments' => array (
				array (
					'title' => $song->tracknote . ': ' . $song->title . ' - ' . $song->artist->artistname,
					'text' => $song->album->albumname . "\n" . $song->duration,
					'thumb_url' => 'http://www.abc.net.au/triplej/albums/' . $song->album->albumid . '/covers/100.jpg',
				),
			),
		);

    		$params = 'payload=' . urlencode( json_encode( $payload ) );

		$ch = curl_init();
	  	curl_setopt( $ch, CURLOPT_URL, SLACK_INCOMING_WEBHOOK );
		curl_setopt( $ch, CURLOPT_CUSTOMREQUEST, 'POST' );
		curl_setopt( $ch, CURLOPT_POSTFIELDS, $params );
		curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
		curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );
		print_r( curl_exec( $ch ) );
		curl_close( $ch );

	}

}

// The end!