1 files changed, 2 insertions, 0 deletions
diff --git a/main/php.h b/main/php.h
index b255ab3e3b..bcc74d9c8d 100644
--- a/main/php.h
+++ b/main/php.h
@@ -307,6 +307,8 @@ int module_startup_modules(void);
 int module_global_startup_modules(void);
 int module_global_shutdown_modules(void);
 
+int mergesort(void *base, size_t nmemb, size_t size, int (*cmp) (const void *, const void *));
+
 /*from basic functions*/
 extern PHPAPI int _php_error_log(int opt_err,char *message,char *opt,char *headers);