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.
Example 1. Informix affected rows
<?php
$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");
}
?>
See also ifx_num_rows().
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