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# PDOStatement::nextRowset

(no version information, might be only in CVS)

PDOStatement::nextRowset -- Advances to the next rowset in a multi-rowset statement handle

## 说明

bool PDOStatement::nextRowset ( void )

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.

## 返回值

如果成功则返回 `TRUE`，失败则返回 `FALSE`。

## 范例

例子 1. Fetching multiple rowsets returned from a stored procedure

The following example shows how to call a stored procedure, MULTIPLE_RESULTS, that returns three rowsets. We use a do / while loop to loop over the PDOStatement::nextRowset() method, which returns false and terminates the loop when no more rowsets can be returned.

`<?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"; } ?>`

上例将输出：

    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

## 参见

PDOStatement::columnCount()
PDOStatement::execute()
PDOStatement::getColumnMeta()
PDOStatement::query()

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PDOStatement::getColumnMeta | 上一级 | PDOStatement::rowCount