PEAR Справочное руководство
Пред.		След.

DB_result::numRows()

DB_result::numRows() -- Gets number of rows in a result set

Synopsis

integer numRows ()

Описание

Get the number of rows in a result set.

Внимание

For ibase, ifx and oci8, this method only works if the DB_PORTABILITY_NUMROWS portability option is enabled. In addition, for ibase and ifx, PEAR DB must be at version 1.7.0 or greater.

Does not work for Microsoft Access.

Возвращаемое значение

integer - number of rows or a DB_Error object on failure

Throws

Таблица 34-1. Возможные значения PEAR_Error

Error code	Error message	Reason	Solution
`DB_ERROR_NOT_CAPABLE`	DB backend not capable	Driver doesn't support this feature.	Either switch to another database system or enable the `DB_PORTABILITY_NUMROWS` portability option.

Заметка

Эта функция не должна вызываться статически.

Пример

Пример 34-1. Using numRows()

<?php
// Once you have a valid DB object named $db...
$res =& $db->query('SELECT * FROM phptest');
echo $res->numRows();
?>

См. также

numCols(), affectedRows()

Пред.	Начало	След.
DB_result::numCols()	Уровень выше	DB_Error

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