(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_num_fields — 锟斤拷锟斤拷锟街段碉拷锟斤拷目
$result
) : int
pg_num_fields() 锟斤拷锟斤拷 PostgreSQL result 锟叫碉拷锟街段ｏ拷锟叫ｏ拷锟斤拷目锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 pg_query() 锟斤拷锟斤拷锟斤拷锟截的诧拷询锟斤拷锟斤拷锟皆达拷拧锟斤拷锟斤拷锟斤拷锟斤拷锟津返伙拷 -1锟斤拷
Note:
锟斤拷锟斤拷锟斤拷锟斤拷前锟斤拷锟斤拷锟斤拷为 pg_numfields()锟斤拷
锟轿硷拷 pg_num_rows() 锟斤拷 pg_affected_rows()锟斤拷