chg: [internal] Faster checking if array is list

app/Controller/Component/RestResponseComponent.php

@@ -633,7 +633,7 @@ class RestResponseComponent extends Component
                 }
                 
                 // If response is big array, encode items separately to save memory
-                if (is_array($response) && count($response) > 10000) {
+                if (is_array($response) && count($response) > 10000 && JsonTool::arrayIsList($response)) {
                     $output = new TmpFileTool();
                     $output->write('[');
 

app/Lib/Tools/JsonTool.php

@@ -68,6 +68,27 @@ class JsonTool
         }
     }
 
+    /**
+     * @see https://www.php.net/manual/en/function.array-is-list.php
+     * @param array $array
+     * @return bool
+     */
+    public static function arrayIsList(array $array)
+    {
+        if (function_exists('array_is_list')) {
+            return array_is_list($array);
+        }
+
+        $i = -1;
+        foreach ($array as $k => $v) {
+            ++$i;
+            if ($k !== $i) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     /**
      * JSON supports just unicode strings. This helper method converts non unicode chars to Unicode Replacement Character U+FFFD (UTF-8)
      * @param string $string

app/Model/Warninglist.php

@@ -390,8 +390,7 @@ class Warninglist extends AppModel
         $warninglistId = (int)$this->id;
         $result = true;
 
-        $keys = array_keys($list['list']);
-        if ($keys === array_keys($keys)) {
+        if (JsonTool::arrayIsList($list['list'])) {
             foreach (array_chunk($list['list'], 1000) as $chunk) {
                 $valuesToInsert = [];
                 foreach ($chunk as $value) {