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ifx_affected_rows
(No version information available, might be only in CVS)
ifx_affected_rows — Get number of rows affected by a query
Описание
int ifx_affected_rows ( resource $result_id )
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.
Список параметров
- result_id
-
A valid result id returned by ifx_query() or ifx_prepare().
Возвращаемые значения
Returns the number of rows as an integer.
Примеры
Пример #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");
}
?>
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