Implement ReflectionConstant::getType()

Fixes GH-16553.

Author: ndossche

ext/reflection/php_reflection.c

@@ -7809,6 +7809,26 @@ ZEND_METHOD(ReflectionConstant, getShortName)
 	}
 }
 
+ZEND_METHOD(ReflectionConstant, getType)
+{
+	reflection_object *intern;
+	zend_constant *const_;
+
+	if (zend_parse_parameters_none() == FAILURE) {
+		RETURN_THROWS();
+	}
+
+	GET_REFLECTION_OBJECT_PTR(const_);
+
+	zend_type fake_type;
+	if (Z_TYPE(const_->value) == IS_OBJECT) {
+		fake_type = (zend_type) ZEND_TYPE_INIT_CLASS(Z_OBJCE(const_->value)->name, false, 0);
+	} else {
+		fake_type = (zend_type) ZEND_TYPE_INIT_CODE(Z_TYPE(const_->value), false, 0);
+	}
+	reflection_type_factory(fake_type, return_value, 1);
+}
+
 ZEND_METHOD(ReflectionConstant, getValue)
 {
 	reflection_object *intern;

ext/reflection/php_reflection.stub.php

@@ -910,6 +910,8 @@ public function getNamespaceName(): string {}
 
     public function getShortName(): string {}
 
+    public function getType(): ?ReflectionType {}
+
     public function getValue(): mixed {}
 
     public function isDeprecated(): bool {}

ext/reflection/php_reflection_arginfo.h

@@ -0,0 +1,40 @@
+--TEST--
+ReflectionConstant::getType()
+--FILE--
+<?php
+
+const C_OBJ = new stdClass;
+const C_NULL = null;
+const C_BOOL = true;
+const C_STRING = "string";
+const C_ARRAY = ["a", "b", "c"];
+const C_INT = 1234;
+const C_FLOAT = 0.1234;
+const C_OBJ2 = C_OBJ;
+
+$list = [
+    "C_OBJ",
+    "C_NULL",
+    "C_BOOL",
+    "C_STRING",
+    "C_ARRAY",
+    "C_INT",
+    "C_FLOAT",
+    "C_OBJ2",
+];
+
+foreach ($list as $name) {
+    $rc = new ReflectionConstant($name);
+    echo $rc->getType(), "\n";
+}
+
+?>
+--EXPECT--
+stdClass
+null
+true
+string
+array
+int
+float
+stdClass