Add documentation of array_is_list() to UPGRADING

diff --git a/UPGRADING b/UPGRADING
index 3c0939796e268aaa11a5d5654a2845a3b1ed7d25..4c9a1536df9a5cd9fc96d5bf9c4247b7e5442681 100644 (file)
--- a/UPGRADING
+++ b/UPGRADING
@@ -155,6 +155,10 @@ PHP 8.1 UPGRADE NOTES
 6. New Functions
 ========================================
 
+- Core:
+  . Added array_is_list(array $array), which will return true if the array keys are 0 .. count($array)-1 in that order.
+    RFC: https://wiki.php.net/rfc/is_list
+
 ========================================
 7. New Classes and Interfaces
 ========================================