diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
index 0ae0ed6bf72e1..36096ebdd415e 100644
--- a/UPGRADING.INTERNALS
+++ b/UPGRADING.INTERNALS
@@ -376,6 +376,8 @@ PHP 8.4 INTERNALS UPGRADE NOTES
    - The deprecated php_uint32 and php_int32 typedefs have been removed from
      ext/standard/basic_functions.h. Use the standard uint32_t and int32_t
      types instead.
+   - The php_mkdir() and php_mkdir_ex() APIs have been removed, use
+     php_stream_mkdir() instead.
    - The php_strtoupper(), php_string_toupper(), php_strtolower(), and
      php_string_tolower() functions has been removed, use zend_str_toupper(),
      zend_string_toupper(), zend_str_tolower(), and zend_string_tolower()
diff --git a/ext/standard/file.c b/ext/standard/file.c
index 7d0d2703ca587..01f49640e4af6 100644
--- a/ext/standard/file.c
+++ b/ext/standard/file.c
@@ -1109,30 +1109,6 @@ PHPAPI PHP_FUNCTION(fseek)
 }
 /* }}} */
 
-/* {{{ php_mkdir */
-
-/* DEPRECATED APIs: Use php_stream_mkdir() instead */
-PHPAPI int php_mkdir_ex(const char *dir, zend_long mode, int options)
-{
-	int ret;
-
-	if (php_check_open_basedir(dir)) {
-		return -1;
-	}
-
-	if ((ret = VCWD_MKDIR(dir, (mode_t)mode)) < 0 && (options & REPORT_ERRORS)) {
-		php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
-	}
-
-	return ret;
-}
-
-PHPAPI int php_mkdir(const char *dir, zend_long mode)
-{
-	return php_mkdir_ex(dir, mode, REPORT_ERRORS);
-}
-/* }}} */
-
 /* {{{ Create a directory */
 PHP_FUNCTION(mkdir)
 {
diff --git a/ext/standard/file.h b/ext/standard/file.h
index d56934f20d271..3a9cf1435b143 100644
--- a/ext/standard/file.h
+++ b/ext/standard/file.h
@@ -40,8 +40,6 @@ PHPAPI int php_le_stream_context(void);
 PHPAPI zend_result php_copy_file(const char *src, const char *dest);
 PHPAPI zend_result php_copy_file_ex(const char *src, const char *dest, int src_flags);
 PHPAPI zend_result php_copy_file_ctx(const char *src, const char *dest, int src_flags, php_stream_context *ctx);
-PHPAPI int php_mkdir_ex(const char *dir, zend_long mode, int options);
-PHPAPI int php_mkdir(const char *dir, zend_long mode);
 PHPAPI void php_fstat(php_stream *stream, zval *return_value);
 PHPAPI void php_flock_common(php_stream *stream, zend_long operation, uint32_t operation_arg_num,
 	zval *wouldblock, zval *return_value);
diff --git a/main/streams/plain_wrapper.c b/main/streams/plain_wrapper.c
index fb2addb9e6de2..7b0813c3db623 100644
--- a/main/streams/plain_wrapper.c
+++ b/main/streams/plain_wrapper.c
@@ -1374,7 +1374,17 @@ static int php_plain_files_mkdir(php_stream_wrapper *wrapper, const char *dir, i
 	}
 
 	if (!(options & PHP_STREAM_MKDIR_RECURSIVE)) {
-		return php_mkdir(dir, mode) == 0;
+		if (php_check_open_basedir(dir)) {
+			return 0;
+		}
+
+		int ret = VCWD_MKDIR(dir, (mode_t)mode);
+		if (ret < 0 && (options & REPORT_ERRORS)) {
+			php_error_docref(NULL, E_WARNING, "%s", strerror(errno));
+			return 0;
+		}
+
+		return 1;
 	}
 
 	char buf[MAXPATHLEN];