mysqlnd_close    1030 ext/mysql/php_mysql.c 			mysqlnd_close(mysql->conn, MYSQLND_CLOSE_DISCONNECTED);
mysqlnd_close      40 ext/mysqli/mysqli_mysqlnd.h #define mysqli_close(c, how)			mysqlnd_close((c), (how))
mysqlnd_close      46 ext/mysqlnd/mysqlnd_libmysql_compat.h #define mysql_close(r)					mysqlnd_close((r), MYSQLND_CLOSE_EXPLICIT)