Optimisations

- Fixed issue with `InputFile` not setting file-name properly.
- Fixed issue with `InputFile` not setting the correct index when
posting certain arrays.
- Made Csrf-token cookie provider more versitile by creating new
`CookieTokenProvider` and `ITokenProvider` classes.
- Strict-checks optimisations.
- Updated documentation to reflect new changes.

src/Pecee/Http/Input/Input.php

@@ -35,7 +35,7 @@ class Input
     public function parseInputs()
     {
         /* Parse get requests */
-        if (count($_GET) > 0) {
+        if (count($_GET) !== 0) {
             $this->get = $this->handleGetPost($_GET);
         }
 
@@ -46,12 +46,12 @@ class Input
             parse_str(file_get_contents('php://input'), $postVars);
         }
 
-        if (count($postVars) > 0) {
+        if (count($postVars) !== 0) {
             $this->post = $this->handleGetPost($postVars);
         }
 
         /* Parse get requests */
-        if (count($_FILES) > 0) {
+        if (count($_FILES) !== 0) {
             $this->file = $this->parseFiles();
         }
     }
@@ -69,7 +69,7 @@ class Input
                 continue;
             }
 
-            $keys = [];
+            $keys = [$key];
 
             $files = $this->rearrangeFiles($value['name'], $keys, $value);
 
@@ -87,6 +87,9 @@ class Input
     protected function rearrangeFiles(array $values, &$index, $original)
     {
 
+        $originalIndex = $index[0];
+        array_shift($index);
+
         $output = [];
 
         $getItem = function ($key, $property = 'name') use ($original, $index) {
@@ -107,7 +110,7 @@ class Input
             if (is_array($getItem($key)) === false) {
 
                 $file = InputFile::createFromArray([
-                    'index'    => $key,
+                    'index'    => (empty($key) === true && empty($originalIndex) === false) ? $originalIndex : $key,
                     'filename' => $getItem($key),
                     'error'    => $getItem($key, 'error'),
                     'tmp_name' => $getItem($key, 'tmp_name'),
@@ -128,7 +131,7 @@ class Input
 
             $files = $this->rearrangeFiles($value, $index, $original);
 
-            if (isset($output[$key])) {
+            if (isset($output[$key]) === true) {
                 $output[$key][] = $files;
             } else {
                 $output[$key] = $files;
@@ -217,15 +220,15 @@ class Input
 
         $element = null;
 
-        if ($methods === null || in_array('get', $methods)) {
+        if ($methods === null || in_array('get', $methods, false) === true) {
             $element = $this->findGet($index);
         }
 
-        if (($element === null && $methods === null) || ($methods !== null && in_array('post', $methods))) {
+        if (($element === null && $methods === null) || ($methods !== null && in_array('post', $methods, false) === true)) {
             $element = $this->findPost($index);
         }
 
-        if (($element === null && $methods === null) || ($methods !== null && in_array('file', $methods))) {
+        if (($element === null && $methods === null) || ($methods !== null && in_array('file', $methods, false) === true)) {
             $element = $this->findFile($index);
         }