PHP Manual
Prev |  | Next

# ifx_affected_rows

(PHP 3>= 3.0.3, PHP 4 )

ifx_affected_rows -- Get number of rows affected by a query

## Description

int ifx_affected_rows ( int result_id)

`result_id` is a valid result id returned by ifx_query() or ifx_prepare().

Returns the number of rows affected by a query associated with `result_id`.

For inserts, updates and deletes the number is the real number (sqlerrd[2]) of affected rows. For selects it is an estimate (sqlerrd[0]). Don't rely on it. The database server can never return the actual number of rows that will be returned by a SELECT because it has not even begun fetching them at this stage (just after the "PREPARE" when the optimizer has determined the query plan).

Useful after ifx_prepare() to limit queries to reasonable result sets.

See also: ifx_num_rows()

Example 1. Informix affected rows

    $rid = ifx_prepare ("select * from emp
                         where name like " . $name, $connid);
    if (! $rid) {
        ... error ...
    }
    $rowcount = ifx_affected_rows ($rid);
    if ($rowcount > 1000) {
        printf ("Too many rows in result set (%d)\n<br>", $rowcount);
        die ("Please restrict your query<br>\n");
    }

Prev | Home | Next
Informix functions | Up | ifx_blobinfile_mode