Implement enums

RFC: https://wiki.php.net/rfc/enumerations

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

Closes GH-6489.

1 files changed, 45 insertions, 0 deletions

diff --git a/Zend/tests/enum/unserialize-refcount.phpt b/Zend/tests/enum/unserialize-refcount.phpt
new file mode 100644
index 0000000000..447b3af182
--- /dev/null
+++ b/Zend/tests/enum/unserialize-refcount.phpt
@@ -0,0 +1,45 @@
+--TEST--
+Enum unserialize refcount
+--FILE--
+<?php
+
+enum Foo {
+    case Bar;
+}
+
+debug_zval_dump(Foo::Bar);
+
+$foo = Foo::Bar;
+debug_zval_dump($foo);
+
+$bar = unserialize('E:7:"Foo:Bar";');
+debug_zval_dump($foo);
+
+unset($bar);
+debug_zval_dump($foo);
+
+unset($foo);
+debug_zval_dump(Foo::Bar);
+
+?>
+--EXPECT--
+object(Foo)#1 (1) refcount(2){
+  ["name"]=>
+  string(3) "Bar" interned
+}
+object(Foo)#1 (1) refcount(3){
+  ["name"]=>
+  string(3) "Bar" interned
+}
+object(Foo)#1 (1) refcount(4){
+  ["name"]=>
+  string(3) "Bar" interned
+}
+object(Foo)#1 (1) refcount(3){
+  ["name"]=>
+  string(3) "Bar" interned
+}
+object(Foo)#1 (1) refcount(2){
+  ["name"]=>
+  string(3) "Bar" interned
+}