ucnv_toUChars 671 ext/intl/converter/converter.c temp_len = 1 + ucnv_toUChars(src_cnv, NULL, 0, src, src_len, &error); ucnv_toUChars 680 ext/intl/converter/converter.c temp_len = ucnv_toUChars(src_cnv, temp, temp_len, src, src_len, &error);