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PDOStatement::nextRowset

(PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.2.0)

PDOStatement::nextRowset 在一个多行集合语句句柄中推进到下一个行集合

说明

public PDOStatement::nextRowset(): bool

一些数据库服务支持返回一个以上行集合(也被称为结果集)的存储过程。PDOStatement::nextRowset() 使你能够结合一个 PDOStatement 对象访问第二个以及后续的行集合。上述的每个行集合可以有不同的列集合。

参数

此函数没有参数。

返回值

成功时返回 true, 或者在失败时返回 false

示例

示例 #1 获取由一个存储过程返回的多个行集合

下面例子展示了怎样调用一个存储过程,返回三个行集合的 MULTIPLE_ROWSETS。用 do-while 循环来循环调用 PDOStatement::nextRowset() 方法,直到返回 false 并且不再有行集合可用时结束循环。

<?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";
}
?>

以上示例会输出:

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

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User Contributed Notes 3 notes

up
3
guilleamathews at gmail dot com
12 years ago
PDO::nextRowset() does not appear to be currently supported by the Firebird PDO driver. Unfortunate.
up
-1
et dot coder at gmail dot com
9 years ago
on MSSQL and 'dsn' => 'dblib:...',:
If you know how many count rowset then don't use contruction of do..while.

<?php
do {
$pdoStatement->fetchAll(\PDO::FETCH_ASSOC);
} while (
$pdoStatement->nextRowset()
);
?>
When I get large fetchAll(over 30) for second nextRowset. I get error - Segmentation fault.

Uses step-by-step insted do..while is fix for this bug:
<?php
$pdoStatement
->fetchAll(\PDO::FETCH_ASSOC);
$pdoStatement->nextRowset();
$pdoStatement->fetchAll(\PDO::FETCH_ASSOC);
?>
up
-6
alex at 1stleg dot com
7 years ago
If you use PDO::fetch instead of PDO::fetchAll and do not reach the end the result set, PDO::nextRowset() will fail with "SQLSTATE[HY000]: General error: PDO_DBLIB: dbresults() returned FAIL."
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