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このドキュメントでは、 php中国語ネットマニュアル リリース
(PHP 4, PHP <=5.2.0)
ifx_num_fields — Returns the number of columns in the query
$result_id
)After preparing or executing a query, this call gives you the number of columns in the query.
result_id
result_id
is a valid resultid returned by
ifx_query() or
ifx_prepare() (select type queries only!).
Returns the number of columns in query for
result_id
, or FALSE
on errors.
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 );
?>