Fixed non-existing keys not being set with default values in imported config

module/Common/functions/functions.php

@@ -4,8 +4,11 @@ declare(strict_types=1);
 namespace Shlinkio\Shlink\Common;
 
 use const JSON_ERROR_NONE;
+use function array_key_exists;
+use function array_shift;
 use function getenv;
 use function in_array;
+use function is_array;
 use function json_last_error;
 use function json_last_error_msg;
 use function strtolower;
@@ -59,3 +62,39 @@ function json_decode(string $json, int $depth = 512, int $options = 0): array
 
     return $data;
 }
+
+function array_path_exists(array $path, array $array): bool
+{
+    // As soon as a step is not found, the path does not exist
+    $step = array_shift($path);
+    if (! array_key_exists($step, $array)) {
+        return false;
+    }
+
+    // Once the path is empty, we have found all the parts in the path
+    if (empty($path)) {
+        return true;
+    }
+
+    // If current value is not an array, then we have not found the path
+    $newArray = $array[$step];
+    if (! is_array($newArray)) {
+        return false;
+    }
+
+    return array_path_exists($path, $newArray);
+}
+
+function array_get_path(array $path, array $array)
+{
+    do {
+        $step = array_shift($path);
+        if (! is_array($array) || ! array_key_exists($step, $array)) {
+            return null;
+        }
+
+        $array = $array[$step];
+    } while (! empty($path));
+
+    return $array;
+}