PHP 8 compat

Author: mevdschee

api.include.php

@@ -8746,7 +8746,11 @@ private function json2xml($json, $types = 'null,boolean,number,string,object,arr
 
         private function xml2json($xml)
         {
-            $a = @dom_import_simplexml(simplexml_load_string($xml));
+            $o = @simplexml_load_string($xml);
+            if ($o===false) {
+                return null;
+            }
+            $a = @dom_import_simplexml($o);
             if (!$a) {
                 return null;
             }

api.php

@@ -8746,7 +8746,11 @@ private function json2xml($json, $types = 'null,boolean,number,string,object,arr
 
         private function xml2json($xml)
         {
-            $a = @dom_import_simplexml(simplexml_load_string($xml));
+            $o = @simplexml_load_string($xml);
+            if ($o===false) {
+                return null;
+            }
+            $a = @dom_import_simplexml($o);
             if (!$a) {
                 return null;
             }

docker-compose.yml

@@ -29,3 +29,5 @@ services:
         - "8080:80"
         depends_on:
         - database
+        volumes:
+        - .:/php-crud-api:ro

src/Tqdev/PhpCrudApi/Middleware/XmlMiddleware.php

@@ -83,7 +83,11 @@ private function json2xml($json, $types = 'null,boolean,number,string,object,arr
 
     private function xml2json($xml)
     {
-        $a = @dom_import_simplexml(simplexml_load_string($xml));
+        $o = @simplexml_load_string($xml);
+        if ($o===false) {
+            return null;
+        }
+        $a = @dom_import_simplexml($o);
         if (!$a) {
             return null;
         }