[FEATURE] Option to disable multi-route rendering

- Added option to disable multi-route rendering by calling `Router::setRenderMultipleRoutes($bool)`.
- Added alias for easier access `SimpleRouter::enableMultiRouteRendering($bool)`.
- Added php-unit tests for multi-routing enabled and disabled.

src/Pecee/SimpleRouter/Router.php

@@ -110,6 +110,13 @@ class Router
      */
     protected $classLoader;
 
+    /**
+     * When enabled the router will render all routes that matches.
+     * When disabled the router will stop execution when first route is found.
+     * @var bool
+     */
+    protected $renderMultipleRoutes = true;
+
     /**
      * Router constructor.
      */
@@ -399,14 +406,21 @@ class Router
                         'route' => $route,
                     ]);
 
-                    $output = $route->renderRoute($this->request, $this);
+                    $routeOutput = $route->renderRoute($this->request, $this);
-                    if ($output !== null) {
-                        return $output;
-                    }
 
-                    $output = $this->handleRouteRewrite($key, $url);
+                    if ($this->renderMultipleRoutes === true) {
-                    if ($output !== null) {
+                        if ($routeOutput !== null) {
-                        return $output;
+                            return $routeOutput;
+                        }
+
+                        $output = $this->handleRouteRewrite($key, $url);
+                        if ($output !== null) {
+                            return $output;
+                        }
+                    } else {
+                        $output = $this->handleRouteRewrite($key, $url);
+
+                        return $output ?? $routeOutput;
                     }
                 }
             }
@@ -912,4 +926,19 @@ class Router
         return $this->debugList;
     }
 
+    /**
+     * Changes the rendering behavior of the router.
+     * When enabled the router will render all routes that matches.
+     * When disabled the router will stop rendering at the first route that matches.
+     *
+     * @param bool $bool
+     * @return $this
+     */
+    public function setRenderMultipleRoutes(bool $bool): self
+    {
+        $this->renderMultipleRoutes = $bool;
+
+        return $this;
+    }
+
 }

src/Pecee/SimpleRouter/SimpleRouter.php

@@ -532,6 +532,18 @@ class SimpleRouter
         return $route;
     }
 
+    /**
+     * Changes the rendering behavior of the router.
+     * When enabled the router will render all routes that matches.
+     * When disabled the router will stop rendering at the first route that matches.
+     *
+     * @param bool $bool
+     */
+    public static function enableMultiRouteRendering(bool $bool): void
+    {
+        static::router()->setRenderMultipleRoutes($bool);
+    }
+
     /**
      * Enable or disable dependency injection
      *

tests/Pecee/SimpleRouter/RouterUrlTest.php

@@ -11,7 +11,7 @@ class RouterUrlTest extends \PHPUnit\Framework\TestCase
     {
         TestRouter::get('/', 'DummyController@method1');
         TestRouter::get('/page/{id?}', 'DummyController@method1');
-        TestRouter::get('/test-output', function() {
+        TestRouter::get('/test-output', function () {
             return 'return value';
         });
 
@@ -175,7 +175,7 @@ class RouterUrlTest extends \PHPUnit\Framework\TestCase
     {
         TestRouter::request()->setHost('google.com');
 
-        TestRouter::get('/admin/', function() {
+        TestRouter::get('/admin/', function () {
             return 'match';
         })->setMatch('/^\/admin\/?(.*)/i');
 
@@ -183,4 +183,42 @@ class RouterUrlTest extends \PHPUnit\Framework\TestCase
         $this->assertEquals('match', $output);
     }
 
+    public function testRenderMultipleRoutesDisabled()
+    {
+        TestRouter::router()->setRenderMultipleRoutes(false);
+
+        $result = false;
+
+        TestRouter::get('/', function () use (&$result) {
+            $result = true;
+        });
+
+        TestRouter::get('/', function () use (&$result) {
+            $result = false;
+        });
+
+        TestRouter::debug('/');
+
+        $this->assertTrue($result);
+    }
+
+    public function testRenderMultipleRoutesEnabled()
+    {
+        TestRouter::router()->setRenderMultipleRoutes(true);
+
+        $result = [];
+
+        TestRouter::get('/', function () use (&$result) {
+            $result[] = 'route1';
+        });
+
+        TestRouter::get('/', function () use (&$result) {
+            $result[] = 'route2';
+        });
+
+        TestRouter::debug('/');
+
+        $this->assertCount(2, $result);
+    }
+
 }