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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 )

警告
本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。使用本函数风险自担。

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`。

## 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