Place your factory classes & interface inside a directory of your choice, like /api/YOUR-PATH-TO-CLASSES-HERE/. Just make sure to specify that path in the __autoload() method when you use the factory (see the last code example below).
Set up the Interface
<?
interface IApiGrabr
{
public function callApi();
}
?>
Implement the Interface with a Twitter Class
This code assumes there’s a directory named ‘api’ at your server’s public root folder. Also, note, in a live example you might want to have a separate file to store some of your Twitter, etc credentials. The Twitter oAuth library I’m using can be found on github.
<?
class TwitterApiGrabr implements IApiGrabr
{
public function callApi(){
require_once('/api/twitteroauth.php'); //open source class from github
$connection = new TwitterOAuth('your-consumer-key',
'your-consumer-secret',
'your-access-token-here',
'your-access-token-secret-here');
$content = $connection->get('account/rate_limit_status');
// you can now call all the methods on the twitteroauth/connection object
$user = $connection->get('account/verify_credentials');
$favs = $connection->get('favorites', array(
'screen_name' => 'TechCrunch',
'count' => 11,
));
//this is FPO, in real life write some formatted display code:
var_dump($favs);
}
}
?>
Implement the Interface with an Instagram Class
The below code uses a handy open source Instagram oAuth class from github.
<?
class InstagramApiGrabr implements IApiGrabr
{
public function callApi(){
//open source class from github
require_once('/api/Instagram.php');
$instagram = new Instagram('your-client-id-here', 'your-client-secret-here', 'your-access-token-here');
//simplified call, in real life, there should be an authentication check (see Instagram.php example on github)
try {
$instafeed = $instagram->get('users/self/media/liked');
}catch(InstagramApiError $e) {
die($e->getMessage());
}
//FPO JSON display, in real life, you'd format this w/ HTML, probably via a for loop
echo '<p> </p>'.json_encode($instafeed);
}
}
?>
Implement the Interface with a Tumblr Class
<?
class TumblrApiGrabr implements IApiGrabr
{
public function callApi(){
//posts
$pth2 = 'http://api.tumblr.com/v2/blog/YOUR-TUMBLR-NAME-HERE.tumblr.com/posts/photo?api_key=YOUR-API-KEY-HERE';
///Tumblr account's posts - http://www.tumblr.com/docs/en/api/v2#posts
$pthresult2 = file_get_contents($pth2);
//FPO to just display raw JSON response, in real life, you'd format it with HTML
echo $pthresult2;
}
}
?>
Set up your Factory class
<?
class MyFactory
{
private static $dictionary;
public static function init()
{
self::$dictionary = array('instagram' => new InstagramApiGrabr(),
'twitter' => new TwitterApiGrabr(),
'tumblr' => new TumblrApiGrabr());
}
public static function GetApi($param='instagram')
{
return self::$dictionary[$param];
}
}
?>
Use Your Factory Class Like So
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>API Test</title>
</head>
<body>
<?
//allow PHP to auto include your individual class files as needed
function __autoload($class_name) {
require_once('/api/YOUR-PATH-TO-CLASSES-HERE/'.$class_name . '.php');
}
MyFactory::init();
/// control the below factory method calls via drop down menu, page navigation inside a carousel, etc.
//will spit out the Instagram JSON feed
$a = MyFactory::GetApi('instagram');
$a->callApi();
//will spit out the Twitter JSON feed
$a = MyFactory::GetApi('twitter');
$a->callApi();
//will spit out the Tumblr JSON feed
$a = MyFactory::GetApi('tumblr');
$a->callApi();
?>
</body>
</html>
Side Note on the Code Igniter framework and PHP interfaces
The Code Igniter mvc framework for PHP doesn’t seem to support “interface” or “implements” key words as of version 2.1.3.
