time cache

.gitignore

@@ -1,2 +1,3 @@
 vendor
 config.yml
+.lastrun

bot.php

@@ -3,6 +3,11 @@ require_once ("vendor/autoload.php");
 use Symfony\Component\Yaml\Yaml;
 
 $config = Yaml::parse(file_get_contents('config.yml'));
+$lastrun = 0;
+if (file_exists('.lastrun')) {
+  $lastrun = file_get_contents('.lastrun');
+}
+echo $lastrun;
 
 function get_text($url) {
   $curl = curl_init();
@@ -29,6 +34,9 @@ $articles = $service->parse($string)[0]['value'];
 unset($string);
 $pandoc = new \Pandoc\Pandoc();
 foreach ($articles as $article) {
+  if (strtotime($article['pubDate']) <= $lastrun) {
+    continue;
+  }
   $title = $article['title'];
   $link = $article['link'];
   $description = $article['description'];
@@ -52,3 +60,4 @@ foreach ($articles as $article) {
     echo $description;
   }
 }
+file_put_contents('.lastrun', time());