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Последние активные темы форума |
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ifx_affected_rows
(PHP 3>= 3.0.3, PHP 4 , PHP 5) ifx_affected_rows -- Get number of rows affected by a query
Descriptionint 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.
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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Смотрите также ifx_num_rows().
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