Removed PHP 7 specific functionality.

src/Pecee/Http/Input/Input.php

@@ -163,7 +163,7 @@ class Input
      */
     public function findPost($index, $defaultValue = null)
     {
-        return $this->post[$index] ?? $defaultValue;
+        return isset($this->post[$index]) ? $this->post[$index] : $defaultValue;
     }
 
     /**
@@ -175,7 +175,7 @@ class Input
      */
     public function findFile($index, $defaultValue = null)
     {
-        return $this->file[$index] ?? $defaultValue;
+        return isset($this->file[$index]) ? $this->file[$index] : $defaultValue;
     }
 
     /**
@@ -187,7 +187,7 @@ class Input
      */
     public function findGet($index, $defaultValue = null)
     {
-        return $this->get[$index] ?? $defaultValue;
+        return isset($this->get[$index]) ? $this->get[$index] : $defaultValue;
     }
 
     /**

src/Pecee/Http/Request.php

@@ -225,7 +225,7 @@ class Request
 
     public function __get($name)
     {
-        return $this->data[$name] ?? null;
+        return isset($this->data[$name]) ? $this->data[$name] : null;
     }
 
 }

src/Pecee/SimpleRouter/Route/LoadableRoute.php

@@ -121,7 +121,7 @@ abstract class LoadableRoute extends Route implements ILoadableRoute
             $param = $keys[$i];
             $value = $params[$param];
 
-            $value = $parameters[$param] ?? $value;
+            $value = isset($parameters[$param]) ? $parameters[$param] : $value;
 
             if (stripos($url, $param1) !== false || stripos($url, $param) !== false) {
                 $url = str_ireplace([sprintf($param1, $param), sprintf($param2, $param)], $value, $url);

src/Pecee/SimpleRouter/Route/Route.php

@@ -136,7 +136,7 @@ abstract class Route implements IRoute
 
                 $name = $parameterNames[$i];
 
-                $parameterValue = $parameterValues[$name['name']] ?? null;
+                $parameterValue = isset($parameterValues[$name['name']]) ? $parameterValues[$name['name']] : null;
 
                 if ($parameterValue === null && $name['required']) {
                     throw new HttpException('Missing required parameter ' . $name['name'], 404);
@@ -386,7 +386,7 @@ abstract class Route implements IRoute
         if (count($this->parameters) > 0) {
 
             /* Ensure the right order + values */
-            $parameters = ($values['parameters'] ?? []) + $this->parameters;
+            $parameters = (isset($values['parameters']) ? $values['parameters'] : []) + $this->parameters;
             $parameters = array_merge($parameters, $this->parameters);
 
             $this->setParameters($parameters);

src/Pecee/SimpleRouter/Route/RouteResource.php

@@ -115,7 +115,7 @@ class RouteResource extends LoadableRoute implements IControllerRoute
 
             $parameters = array_merge($this->parameters, (array)$parameters);
 
-            $action = $parameters['action'] ?? null;
+            $action = isset($parameters['action']) ? $parameters['action'] : null;
             unset($parameters['action']);
 
             $method = $request->getMethod();