PDOStatement::rowCount

Returns the number of rows affected by the last SQL statement

&reftitle.description; public `int` `PDOStatement::rowCount`

`PDOStatement::rowCount` returns the number of rows affected by the last DELETE, INSERT, or UPDATE statement executed by the corresponding `PDOStatement` object.

For statements that produce result sets, such as `SELECT`, the behavior is undefined and can be different for each driver. Some databases may return the number of rows produced by that statement (e.g. MySQL in buffered mode), but this behaviour is not guaranteed for all databases and should not be relied on for portable applications.

This method returns "0" (zero) with the SQLite driver at all times, and with the PostgreSQL driver only when setting the `PDO::ATTR_CURSOR` statement attribute to `PDO::CURSOR_SCROLL`.

&reftitle.parameters; &no.function.parameters;
&reftitle.returnvalues;

Returns the number of rows.

&reftitle.errors; &pdo.errors;
&reftitle.examples;

### Return the number of deleted rows

`PDOStatement::rowCount` returns the number of rows affected by a DELETE, INSERT, or UPDATE statement.

    <?php
    /* Delete all rows from the FRUIT table */
    $del = $dbh->prepare('DELETE FROM fruit');
    $del->execute();

    /* Return number of rows that were deleted */
    print "Return number of rows that were deleted:\n";
    $count = $del->rowCount();
    print "Deleted $count rows.\n";
    ?>

&example.outputs.similar;

    Return number of rows that were deleted:
    Deleted 9 rows.

### Counting rows returned by a SELECT statement

For most databases, `PDOStatement::rowCount` does not return the number of rows affected by a SELECT statement. Instead, use `PDO::query` to issue a SELECT COUNT(*) statement with the same predicates as your intended SELECT statement, then use `PDOStatement::fetchColumn` to retrieve the number of matching rows.

    <?php
    $sql = "SELECT COUNT(*) FROM fruit WHERE calories > 100";
    $res = $conn->query($sql);
    $count = $res->fetchColumn();

    print "There are " .  $count . " matching records.";

&example.outputs.similar;

    There are 2 matching records.

&reftitle.seealso;

- `PDOStatement::columnCount`
- `PDOStatement::fetchColumn`
- `PDO::query`