diff --git a/sapi/phpdbg/phpdbg_prompt.c b/sapi/phpdbg/phpdbg_prompt.c
index 994ac829b0a5e..8a5610554399b 100644
--- a/sapi/phpdbg/phpdbg_prompt.c
+++ b/sapi/phpdbg/phpdbg_prompt.c
@@ -454,6 +454,8 @@ PHPDBG_COMMAND(exec) /* {{{ */
 	return SUCCESS;
 } /* }}} */
 
+int phpdbg_compile_stdin_ex(zend_string *code, zend_compile_position position);
+
 PHPDBG_COMMAND(stdin)
 {
 	smart_str code = {0};
@@ -462,8 +464,6 @@ PHPDBG_COMMAND(stdin)
 	int seplen = param->len;
 	int bytes = 0;
 
-	smart_str_appends(&code, "?>");
-
 	do {
 		PHPDBG_G(input_buflen) += bytes;
 		if (PHPDBG_G(input_buflen) <= 0) {
@@ -507,7 +507,7 @@ PHPDBG_COMMAND(stdin)
 exec_code:
 	smart_str_0(&code);
 
-	if (phpdbg_compile_stdin(code.s) == FAILURE) {
+	if (phpdbg_compile_stdin_ex(code.s ? code.s : ZSTR_EMPTY_ALLOC(), ZEND_COMPILE_POSITION_AT_OPEN_TAG) == FAILURE) {
 		zend_exception_error(EG(exception), E_ERROR);
 		zend_bailout();
 	}
@@ -515,8 +515,9 @@ PHPDBG_COMMAND(stdin)
 	return SUCCESS;
 } /* }}} */
 
-int phpdbg_compile_stdin(zend_string *code) {
-	PHPDBG_G(ops) = zend_compile_string(code, "Standard input code", ZEND_COMPILE_POSITION_AFTER_OPEN_TAG);
+int phpdbg_compile_stdin_ex(zend_string *code, zend_compile_position position)
+{
+	PHPDBG_G(ops) = zend_compile_string(code, "Standard input code", position);
 	zend_string_release(code);
 
 	if (EG(exception)) {
@@ -552,6 +553,11 @@ int phpdbg_compile_stdin(zend_string *code) {
 	return SUCCESS;
 }
 
+int phpdbg_compile_stdin(zend_string *code)
+{
+	return phpdbg_compile_stdin_ex(code, ZEND_COMPILE_POSITION_AFTER_OPEN_TAG);
+}
+
 int phpdbg_compile(void) /* {{{ */
 {
 	zend_file_handle fh;
diff --git a/sapi/phpdbg/tests/stdin_002.phpt b/sapi/phpdbg/tests/stdin_002.phpt
new file mode 100644
index 0000000000000..cb011d4d0d8e3
--- /dev/null
+++ b/sapi/phpdbg/tests/stdin_002.phpt
@@ -0,0 +1,25 @@
+--TEST--
+Test stdin input with strict types
+--PHPDBG--
+stdin foo
+<?php
+declare(strict_types=1);
+echo "Hello, world!\n";
+foo
+b 3
+r
+c
+r
+q
+--EXPECT--
+prompt> [Successful compilation of stdin input]
+prompt> [Breakpoint #0 added at Standard input code:3]
+prompt> [Breakpoint #0 at Standard input code:3, hits: 1]
+>00003: echo "Hello, world!\n";
+ 00004: 
+prompt> Hello, world!
+[Script ended normally]
+prompt> [Breakpoint #0 at Standard input code:3, hits: 1]
+>00003: echo "Hello, world!\n";
+ 00004: 
+prompt>