Initialize
affected_rows()
attr_get(option)
attr_set(option, arg)
bind_result(bind,…)
close()
data_seek(offset)
each {…}
execute(arg,…)
fetch()
field_count()
free_result()
insert_id()
num_rows()
param_count()
prepare(query)
reset()
result_metadata()
row_seek(offset)
row_tell()
send_long_data(col, data)
sqlstate()
[Validate]