Check time since file was edited.

gistfile1.txt

<?php
$filename = SITE_ROOT . '/public/layouts/programmatic/twitter.php';
if (file_exists($filename)) {
	
	$minutes = 20;
	// 60 seconds * 20 = 20 minutes
	$time_to_check = 60 * $minutes;
	// Current time (time() will tell you the time... in seconds) minus the time the file was modified = how old the file is
	$time_since_creation = time() - filemtime($filename);
	if($time_since_creation > $time_to_check){
	  // Do all the api stuff
		$api = new OAuthDamnit(TWITTER_CONSUMER_KEY, TWITTER_CONSUMER_SECRET, TWITTER_ACCESS_TOKEN, TWITTER_ACCESS_TOKEN_SECRET);
		$opts = array(
			'screen_name'=>'YSLBeautyUK',
			'count'=>'5',
		);

		$raw = $api->get('https://api.twitter.com/1.1/favorites/list.json', $opts);
		$response = json_decode($raw, true);
		if(isset($_GET['debug'])){
			echo "<!-- ";
			print_r($response);
			echo "-->";	
		}

		$twitter_feed = "<ul class='twitter-tweets'>";
		foreach($response as $tweet){
			echo "<!-- Refreshed -->";
			$tweet_text = $tweet['text'];

			//Convert urls to <a> links
			$tweet_text = preg_replace("/([\w]+\:\/\/[\w-?&;#~=\.\/\@]+[\w\/])/", "<a target=\"_blank\" href=\"$1\">$1</a>", $tweet_text);

			//Convert hashtags to twitter searches in <a> links
			$tweet_text = preg_replace("/#([A-Za-z0-9\/\.]*)/", "<a target=\"_new\" href=\"http://twitter.com/search?q=$1\">#$1</a>", $tweet_text);

			//Convert attags to twitter profiles in <a> links
			$tweet_text = preg_replace("/@([A-Za-z0-9\/\.]*)/", "<a href=\"http://www.twitter.com/$1\">@$1</a>", $tweet_text);

			$twitter_feed .= "<li>$tweet_text</li>";
		}
		$twitter_feed .= "</ul>";

		file_put_contents($filename, $twitter_feed);
	}else{
		// Don't refresh
	}
}
echo "<!-- " . round($time_since_creation / 60) . " minutes old refresh at " . $minutes . " -->";
layout('programmatic/twitter.php');
?>