ch_to 2912 ext/standard/string.c char ch_to = *str_to; ch_to 2916 ext/standard/string.c str[i] = ch_to; ch_to 2948 ext/standard/string.c char ch_to = *str_to; ch_to 2954 ext/standard/string.c ZSTR_VAL(new_str)[i] = ch_to; ch_to 2959 ext/standard/string.c ZSTR_VAL(new_str)[i] = (ZSTR_VAL(str)[i] != ch_from) ? ZSTR_VAL(str)[i] : ch_to;