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# ifx_affected_rows

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

      1
      2 $rid = ifx_prepare ("select * from emp
      3                      where name like " . $name, $connid);
      4 if (! $rid) {
      5     ... error ...
      6 }
      7 $rowcount = ifx_affected_rows ($rid);
      8 if ($rowcount > 1000) {
      9     printf ("Too many rows in result set (%d)\n<br>", $rowcount);
     10     die ("Please restrict your query<br>\n");
     11 }
     12

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