diff --git a/sapi/phpdbg/phpdbg.c b/sapi/phpdbg/phpdbg.c
index 52eed52fbacb4..0540676e0f5f2 100644
--- a/sapi/phpdbg/phpdbg.c
+++ b/sapi/phpdbg/phpdbg.c
@@ -170,11 +170,7 @@ static PHP_MINIT_FUNCTION(phpdbg) /* {{{ */
 
 	zend_execute_ex = phpdbg_execute_ex;
 
-	REGISTER_STRINGL_CONSTANT("PHPDBG_VERSION", PHPDBG_VERSION, sizeof(PHPDBG_VERSION)-1, CONST_CS|CONST_PERSISTENT);
-
-	REGISTER_LONG_CONSTANT("PHPDBG_COLOR_PROMPT", PHPDBG_COLOR_PROMPT, CONST_CS|CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("PHPDBG_COLOR_NOTICE", PHPDBG_COLOR_NOTICE, CONST_CS|CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("PHPDBG_COLOR_ERROR",  PHPDBG_COLOR_ERROR, CONST_CS|CONST_PERSISTENT);
+	register_phpdbg_symbols(module_number);
 
 	return SUCCESS;
 } /* }}} */
diff --git a/sapi/phpdbg/phpdbg.stub.php b/sapi/phpdbg/phpdbg.stub.php
index 40a51d892a166..ad0e42c85c572 100644
--- a/sapi/phpdbg/phpdbg.stub.php
+++ b/sapi/phpdbg/phpdbg.stub.php
@@ -2,6 +2,28 @@
 
 /** @generate-class-entries */
 
+/**
+ * @var string
+ * @cvalue PHPDBG_VERSION
+ */
+const PHPDBG_VERSION = UNKNOWN;
+
+/**
+ * @var int
+ * @cvalue PHPDBG_COLOR_PROMPT
+ */
+const PHPDBG_COLOR_PROMPT = UNKNOWN;
+/**
+ * @var int
+ * @cvalue PHPDBG_COLOR_NOTICE
+ */
+const PHPDBG_COLOR_NOTICE = UNKNOWN;
+/**
+ * @var int
+ * @cvalue PHPDBG_COLOR_ERROR
+ */
+const PHPDBG_COLOR_ERROR = UNKNOWN;
+
 function phpdbg_break_next(): void {}
 
 function phpdbg_break_file(string $file, int $line): void {}
diff --git a/sapi/phpdbg/phpdbg_arginfo.h b/sapi/phpdbg/phpdbg_arginfo.h
index 043f667459576..8f7ff50f4c3e7 100644
--- a/sapi/phpdbg/phpdbg_arginfo.h
+++ b/sapi/phpdbg/phpdbg_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: dc2e5420ea396c6235429c9606875ad2332811cb */
+ * Stub hash: 08e29f02953f23bfce6ce04f435227b4e5e61545 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_phpdbg_break_next, 0, 0, IS_VOID, 0)
 ZEND_END_ARG_INFO()
@@ -71,3 +71,11 @@ static const zend_function_entry ext_functions[] = {
 	ZEND_FE(phpdbg_get_executable, arginfo_phpdbg_get_executable)
 	ZEND_FE_END
 };
+
+static void register_phpdbg_symbols(int module_number)
+{
+	REGISTER_STRING_CONSTANT("PHPDBG_VERSION", PHPDBG_VERSION, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("PHPDBG_COLOR_PROMPT", PHPDBG_COLOR_PROMPT, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("PHPDBG_COLOR_NOTICE", PHPDBG_COLOR_NOTICE, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("PHPDBG_COLOR_ERROR", PHPDBG_COLOR_ERROR, CONST_CS | CONST_PERSISTENT);
+}