xkcd.php

<?php
require "xkcd.config.php";
//$lastfile=__DIR__.".xkcd_last"; // temporary file to keep track of the last comic posted
//$whurl="https://discordapp.com/api/webhooks/.../..."; // get this url from discord
//$xkcdurl="https://xkcd.com/rss.xml"; // get this url from xkcd oh wait i already got it
$xml=new SimpleXMLElement(file_get_contents($xkcdurl));
$item=$xml->channel->item;
$guid=$item->guid;
$lastguid=file_get_contents($lastfile);
if(trim($lastguid)===trim($guid)){
 die(); // if we already posted this comic, don't post it again
}
file_put_contents($lastfile,$guid);
$data=["content"=>(string)$guid];
$ch = curl_init($whurl);
curl_setopt($ch,CURLOPT_POST,1);
curl_setopt($ch,CURLOPT_POSTFIELDS,json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
curl_exec($ch);