--- /dev/null
+Unicode escape sequence
+-----
+<?php
+
+"\u{0}";
+"\u{114}";
+"\u{1F602}";
+-----
+!!php7
+array(
+ 0: Scalar_String(
+ value: @@{"\0"}@@
+ )
+ 1: Scalar_String(
+ value: Ĕ
+ )
+ 2: Scalar_String(
+ value: @@{"\xF0\x9F\x98\x82"}@@
+ )
+)