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<?php |
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declare(strict_types=1); |
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namespace Zewa; |
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use Sabre\Event\Emitter; |
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use Zewa\Exception\Exception; |
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use Zewa\HTTP\Request; |
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/** |
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* This class is the starting point for application |
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* |
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* @author Zechariah Walden<zech @ zewadesign.com> |
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*/ |
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class App |
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{ |
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/** |
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* Return value from application |
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* |
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* @var string |
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*/ |
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private $output = ''; |
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/** |
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* @var Dependency $dependency |
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*/ |
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private $dependency; |
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/** |
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* @var Emitter |
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*/ |
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private $event; |
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/** |
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* @var Router |
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*/ |
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private $router; |
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/** |
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* @var Request |
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*/ |
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private $request; |
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/** |
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* Application bootstrap process |
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* |
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* The application registers the configuration in the app/config/core.php |
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* and then processes, and makes available the configured resources |
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* |
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* App constructor. |
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* @param Dependency $dependency |
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*/ |
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public function __construct(Dependency $dependency) |
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{ |
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$this->configuration = $dependency->resolve('\Zewa\Config'); |
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$this->event = $dependency->resolve('\Sabre\Event\Emitter', true); |
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$this->dependency = $dependency; |
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/** @var Security security */ |
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$this->security = $dependency->resolve('\Zewa\Security', true); |
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/** @var Router router */ |
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$this->router = $dependency->resolve('\Zewa\Router', true); |
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/** @var Request request */ |
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$this->request = $dependency->resolve('\Zewa\HTTP\Request', true); |
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} |
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/** |
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* Calls the proper shell for app execution |
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* |
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* @access private |
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*/ |
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public function initialize() |
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{ |
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$request = $this->router->getAction(); |
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$isRouteCallback = $this->processRequestParameters($request); |
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$this->start($isRouteCallback); |
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return $this; |
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} |
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/** |
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* @param $request array |
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* @param $request[0] string namespace to load |
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* @param $request[1] string method to call |
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* @access private |
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* @return bool |
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* @throws Exception |
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*/ |
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private function processRequestParameters($request) : bool |
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{ |
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$params = $this->router->getParameters(); |
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if($request !== null) { |
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if(is_array($request)) { |
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$callback = false; |
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$this->request->setRequest($this->dependency->resolve($request[0])); |
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$this->request->setMethod(($request[1]??[])); |
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} else { |
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$callback = true; |
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$this->request->setRequest($request); |
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array_unshift($params, $this->dependency); |
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} |
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$this->request->setParams($params); |
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return $callback; |
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} |
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throw new Exception('Invalid request'); |
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} |
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/** |
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* @param bool $isRouteCallback |
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*/ |
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private function start(bool $isRouteCallback) |
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{ |
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$request = $this->request->getRequest(); |
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$method = $this->request->getMethod(); |
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$params = $this->request->getParams(); |
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if($isRouteCallback === false) { // Routed Callback |
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$this->output = call_user_func_array( |
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[&$request, $method], |
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$params |
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); |
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} else { |
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$this->output = call_user_func_array($request, $params); |
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} |
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} |
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/** |
|
130
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* Prepare application return value into a string |
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131
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* |
|
132
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|
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* @access public |
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133
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|
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* @return string |
|
134
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|
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*/ |
|
135
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|
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public function __toString() |
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|
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{ |
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return $this->output; |
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} |
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} |
zewadesign /
framework
Loading history...
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: