A very basic Controller and Template class to kickstart a simple PHP application. It is action-driven; meaning you define methods like getIndex(), getPage($name) and postForm(). These methods get called when users navigate to /index, /page/something or POST to /form respectively.
Clone this repository (or use submodules) in the directory where you want to store your own code. Then create index.php like this:
<?php
spl_autoload_register(function($class){
if (0 === strpos($class, 'TooBasic\\'))
require(__DIR__ .'/'. str_replace('\\', '/', $class) .'.php');
});
class My_First_Site extends TooBasic\Controller
{
}
My_First_Site::dispatch($_SERVER['QUERY_STRING']);Additionally, TooBasic\Template expects a tpl directory with at least a _wrapper.php file.
The above dispatch() call works for URLs like http://example.com/MyFirstSite/?page/contact. If you want nice URLs you should send all requests to index.php. For Apache; create a .htaccess file with these contents:
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^.*$ /index.php
For nginx you'll probably need root-rights to add something like this to your server-configuration file:
location /
{
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root/index.php;
fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
}
A more complete usage example which demonstrates most features:
<?php
spl_autoload_register(function($class){
if (0 === strpos($class, 'TooBasic\\'))
require(__DIR__ .'/'. str_replace('\\', '/', $class) .'.php');
});
class My_First_Site extends TooBasic\Controller
{
protected $_db;
protected $_tpl;
// This method gets called before the actual action-method
protected function _construct(string $method, string $action, array $params)
{
$this->_db = new Pdo(/* missing parameters */);
$this->_tpl = new TooBasic\Template;
// Define some variables which are available in all templates
$this->_tpl->title = 'My first site';
$this->_tpl->time = date('r');
}
public function getPage($name)
{
$query = $this->_db->prepare("SELECT * FROM Page WHERE !deleted AND name = ?");
if (!$query->execute(['name' => $name]))
throw new Exception("Could not find page in database");
// Make $this->page available in the template
$this->_tpl->page = $query->fetch();
// Fetch the 'page' template; it's contents are then wrapped
// in the header and footer contained in tpl/_wrapper.php
print $this->_tpl->get('page')->getWrapped();
}
// 'index' is the default action
public function getIndex()
{
return $this->getPage('index');
}
// This gets called when a user POSTs to /form
public function postForm()
{
$this->_tpl->user = htmlspecialchars($_POST['user']);
return $this->getPage('thanks');
}
// You can also define a generic method which gets called when the specific action is unknown
public function get($action)
{
throw new Exception('Sorry we have never heard of this "'. $action .'" you speak of');
}
// This action gets called when an error occurs; eg the action is unknown
protected function _handle(Exception $e)
{
if (!headers_sent())
http_response_code(500);
// This is an alternative syntax for Template; it is equal
// to $this->_tpl->get('error')->getWrapped() but has a
// separate scope. Thus, it doesn't know about 'title' in
// this example, only 'exception' is available
TooBasic\Template::show('error', ['exception' => $e]);
}
}
My_First_Site::dispatch();As for templates; create tpl/_wrapper.php and tpl/page.php. The _wrapper.php could contain:
<!DOCTYPE html>
<html>
<body>
<?=$this->content?>
</body>
</html>while the page.php could contain
<h1><?=$this->page['title']?></h1>
<p><?=$this->page['content']?></p>