Merge pull request #1 from nanasess/improve/php8.1

Fix `Serialization of 'DOMDocument' is not allowed

Author: nanasess

composer.json

@@ -1,8 +1,8 @@
 {
-    "name": "sebastian/global-state",
+    "name": "php5friends/global-state11",
     "description": "Snapshotting of global state",
     "keywords": ["global state"],
-    "homepage": "http://www.github.com/sebastianbergmann/global-state",
+    "homepage": "http://www.github.com/php5friends/global-state11",
     "license": "BSD-3-Clause",
     "authors": [
         {
@@ -14,7 +14,10 @@
         "php": ">=5.3.3"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.2|~5.0"
+        "php5friends/phpunit48": "^4.8"
+    },
+    "replace": {
+        "sebastian/global-state": "*"
     },
     "suggest": {
         "ext-uopz": "*"

src/Snapshot.php

@@ -402,6 +402,14 @@ private function setupSuperGlobalArrays()
      */
     private function canBeSerialized($variable)
     {
+        if (PHP_VERSION_ID >= 80100) {
+            try {
+                serialize($variable);
+            } catch (\Exception $e) {
+                return false;
+            }
+        }
+
         if (!is_object($variable)) {
             return !is_resource($variable);
         }