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# MDB_Common::affectedRows()

MDB_Common::affectedRows() -- Number of affected rows

## Synopsis

    require_once 'MDB.php';

``integer affectedRows` ()`

## Description

Number of affected rows by a query

## Return value

`integer` - number of rows or MDB_Error when fail

## Throws

Table 33-1. Possible PEAR_Error values

Error code | Error message | Reason | Solution
--- | --- | --- | ---
`MDB_ERROR_NOT_CAPABLE` | `NULL` | Function is not supported by the database backend | Switch to another database system, if you really need this feature.

## Note

This function can not be called statically.

## See

query()

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