mb_valid 743 ext/mysqlnd/mysqlnd_charset.c if (cset->char_maxlen > 1 && (len = cset->mb_valid(escapestr, end))) { mb_valid 799 ext/mysqlnd/mysqlnd_charset.c if (cset->char_maxlen > 1 && (len = cset->mb_valid(escapestr, end))) { mb_valid 146 ext/mysqlnd/mysqlnd_structs.h unsigned int (*mb_valid)(const char *start, const char *end);