check_mb_euckr 503 ext/mysqlnd/mysqlnd_charset.c { 19, "euckr", "euckr_korean_ci", 1, 2, "", mysqlnd_mbcharlen_euckr, check_mb_euckr}, check_mb_euckr 572 ext/mysqlnd/mysqlnd_charset.c { 85, "euckr", "euckr_bin", 1, 2, "", mysqlnd_mbcharlen_euckr, check_mb_euckr},