Upgrade framework

vendor/symfony/translation/Util/ArrayConverter.php

@@ -27,15 +27,13 @@ class ArrayConverter
 {
     /**
      * Converts linear messages array to tree-like array.
-     * For example this rray('foo.bar' => 'value') will be converted to array('foo' => array('bar' => 'value')).
+     * For example this array('foo.bar' => 'value') will be converted to ['foo' => ['bar' => 'value']].
      *
      * @param array $messages Linear messages array
-     *
-     * @return array Tree-like messages array
      */
-    public static function expandToTree(array $messages)
+    public static function expandToTree(array $messages): array
     {
-        $tree = array();
+        $tree = [];
 
         foreach ($messages as $id => $value) {
             $referenceToElement = &self::getElementByPath($tree, explode('.', $id));
@@ -54,7 +52,7 @@ class ArrayConverter
         $parentOfElem = null;
 
         foreach ($parts as $i => $part) {
-            if (isset($elem[$part]) && is_string($elem[$part])) {
+            if (isset($elem[$part]) && \is_string($elem[$part])) {
                 /* Process next case:
                  *    'foo': 'test1',
                  *    'foo.bar': 'test2'
@@ -62,14 +60,14 @@ class ArrayConverter
                  * $tree['foo'] was string before we found array {bar: test2}.
                  *  Treat new element as string too, e.g. add $tree['foo.bar'] = 'test2';
                  */
-                $elem = &$elem[implode('.', array_slice($parts, $i))];
+                $elem = &$elem[implode('.', \array_slice($parts, $i))];
                 break;
             }
             $parentOfElem = &$elem;
             $elem = &$elem[$part];
         }
 
-        if (is_array($elem) && count($elem) > 0 && $parentOfElem) {
+        if ($elem && \is_array($elem) && $parentOfElem) {
             /* Process next case:
              *    'foo.bar': 'test1'
              *    'foo': 'test2'
@@ -84,12 +82,12 @@ class ArrayConverter
         return $elem;
     }
 
-    private static function cancelExpand(array &$tree, $prefix, array $node)
+    private static function cancelExpand(array &$tree, string $prefix, array $node)
     {
         $prefix .= '.';
 
         foreach ($node as $id => $value) {
-            if (is_string($value)) {
+            if (\is_string($value)) {
                 $tree[$prefix.$id] = $value;
             } else {
                 self::cancelExpand($tree, $prefix.$id, $value);