PDOStatement::nextRowset

Advances to the next rowset in a multi-rowset statement handle

&reftitle.description; public `bool` `PDOStatement::nextRowset`

Some database servers support stored procedures that return more than one rowset (also known as a result set). `PDOStatement::nextRowset` enables you to access the second and subsequent rowsets associated with a PDOStatement object. Each rowset can have a different set of columns from the preceding rowset.

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

&return.success;

&reftitle.examples;

### Fetching multiple rowsets returned from a stored procedure

The following example shows how to call a stored procedure, `MULTIPLE_ROWSETS`, which returns three rowsets. We use a do-while loop to call the `PDOStatement::nextRowset` method until it returns &false; and terminates the loop when no more rowsets are available.

    <?php
    $sql = 'CALL multiple_rowsets()';
    $stmt = $conn->query($sql);
    $i = 1;
    do {
        $rowset = $stmt->fetchAll(PDO::FETCH_NUM);
        if ($rowset) {
            printResultSet($rowset, $i);
        }
        $i++;
    } while ($stmt->nextRowset());

    function printResultSet(&$rowset, $i) {
        print "Result set $i:\n";
        foreach ($rowset as $row) {
            foreach ($row as $col) {
                print $col . "\t";
            }
            print "\n";
        }
        print "\n";
    }
    ?>

&example.outputs;

    Result set 1:
    apple    red
    banana   yellow

    Result set 2:
    orange   orange    150
    banana   yellow    175

    Result set 3:
    lime     green
    apple    red
    banana   yellow

&reftitle.seealso;

- `PDOStatement::columnCount`
- `PDOStatement::execute`
- `PDOStatement::getColumnMeta`
- `PDO::query`