ifx_affected_rows
(PHP 4, PHP <=5.2.0)
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.
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");
}
?>
- PHP Руководство
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- Informix
- ifx_affected_rows
- ifx_blobinfile_mode
- ifx_byteasvarchar
- ifx_close
- ifx_connect
- ifx_copy_blob
- ifx_create_blob
- ifx_create_char
- ifx_do
- ifx_error
- ifx_errormsg
- ifx_fetch_row
- ifx_fieldproperties
- ifx_fieldtypes
- ifx_free_blob
- ifx_free_char
- ifx_free_result
- ifx_get_blob
- ifx_get_char
- ifx_getsqlca
- ifx_htmltbl_result
- ifx_nullformat
- ifx_num_fields
- ifx_num_rows
- ifx_pconnect
- ifx_prepare
- ifx_query
- ifx_textasvarchar
- ifx_update_blob
- ifx_update_char
- ifxus_close_slob
- ifxus_create_slob
- ifxus_free_slob
- ifxus_open_slob
- ifxus_read_slob
- ifxus_seek_slob
- ifxus_tell_slob
- ifxus_write_slob
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