Merriam Webster Word of the Day integration for Slack

wotd.php

<?php

$wotd = get_wotd();
if ( !empty( $wotd ) ) {
	send_to_slack( $wotd );
}

function get_wotd() {
	$rss = new DOMDocument();
	$rss->load( 'https://www.merriam-webster.com/wotd/feed/rss2' );
	$link = '';
	foreach ($rss->getElementsByTagName('item') as $node) {
		$link = $node->getElementsByTagName('link')->item(0)->nodeValue;
		break;
	}
	return str_replace( ' ', '%20', $link );
}

function send_to_slack( $message ) {
    $ch = curl_init( 'https://slack.com/api/chat.postMessage' );
    $data = http_build_query([
        'token'        => 'YOURTOKEN',
    	'channel'      => '#general', 
       	'text'         => $message, //'Hello, Foo-Bar channel message.',
       	'unfurl_links' => true
    ]);
    curl_setopt( $ch, CURLOPT_CUSTOMREQUEST, 'POST' );
    curl_setopt( $ch, CURLOPT_POSTFIELDS, $data );
    curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
    curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );
    $result = curl_exec( $ch );
    curl_close( $ch);
    
    return $result;
}