check_mb_big5 447 ext/mysqlnd/mysqlnd_charset.c { 1, "big5","big5_chinese_ci", 1, 2, "", mysqlnd_mbcharlen_big5, check_mb_big5}, check_mb_big5 531 ext/mysqlnd/mysqlnd_charset.c { 84, "big5", "big5_bin", 1, 2, "", mysqlnd_mbcharlen_big5, check_mb_big5},