Caches a json file of your twitter timeline with a 10 minute timeout. Helpful to combat the API limit.

twitter_cache.php

<?php 

header('Content-type: text/json');
header('Content-type: application/json');

function savetwit ($username) 
{
	//create the rss feed
	$local_file = './twitterfeeds/'.$username.'.json';

	$url = "https://api.twitter.com/1/statuses/user_timeline.json/?screen_name=".$username."&include_entities=true";

	if (is_file($local_file))
		{
			//Find out how many seconds it has been since the file was last updated - in seconds
			$time_lapse = (strtotime("now") - filemtime($local_file));
				//if it has been more than 10 minutes, update the local feed
				if ($time_lapse > 600) 
					{
						//grab the feed from twitter
						$feed_grab = file_get_contents($url);
							//check to make sure the feed has content and isn't just some error message
							if (strlen($feed_grab) > 100)
								{
									//if all  looks good, update the local feed
									file_put_contents($local_file, $feed_grab);

									echo $feed_grab;
								}
					
					
					} else {

						echo file_get_contents($local_file);
					}		
		
		
		} 
		
	else 
		{
			//grab the feed from twitter
			$feed_grab = file_get_contents($url);
			//check to make sure the feed has content and isn't just some error message
				if (strlen($feed_grab) > 100)
					{
						//if all  looks good, update the local feed
						file_put_contents($local_file, $feed_grab);
						echo $feed_grab;
					}
		
		}

}

$u = 'YOUR TWITTER SCREENNAME';

savetwit($u);

?>