ifx_num_fields()
(PHP 4, PHP 5 < 5.2.1)
Returns the number of columns in the query
说明
ifx_num_fields(resource $result_id): int
After preparing or executing a query, this call gives you the number of columns in the query.
参数
- $result_id
$result_idis a valid resultid returned by ifx_query() or ifx_prepare()(select type queries only!).
返回值
Returns the number of columns in query for$result_id, or FALSE
on errors.
范例
Example #1 ifx_num_fields() Example
<?php $conn_id = ifx_connect("db", "user", "password"); $res_id = ifx_query("select * from systables", $conn_id); echo ifx_num_fields($res_id); ?>
参见
ifx_num_rows()
Count the rows already fetched from a query