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  • 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

    上篇:ifx_nullformat()

    下篇:ifx_num_rows()