diff --git a/acinclude.m4 b/acinclude.m4
index 7fb579d1b88..014478e5cb2 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1154,3 +1154,18 @@ AC_DEFUN(PHP_CHECK_LIBRARY, [
   ])dnl
 ])
 
+
+
+dnl
+AC_DEFUN(PHP_CHECK_INTERACTIVE, [
+  if test "$PHP_SAPI" != "cgi"; then
+    AC_MSG_ERROR([$1 extension can only be used with CGI build!])
+  fi
+])
+
+dnl
+AC_DEFUN(PHP_CHECK_STANDALONE, [
+  if test "$PHP_SAPI" != "cgi"; then
+      AC_MSG_ERROR([$1 extension may affect webserver operation internals, so it can only be used with CGI build!])
+  fi
+])