sqlsrv_rollback
（没有可用的版本信息，可能只在Git中）
sqlsrv_rollback - 回退以sqlsrv_begin_transaction（）开始的事务
描述
bool sqlsrv_rollback ( resource $conn )回退以sqlsrv_begin_transaction（）开始的事务并将连接返回到自动提交模式。
参数
conn
由调用sqlsrv_connect（）返回的连接资源。
返回值
成功时返回TRUE或失败时返回FALSE。
例子
示例＃1 sqlsrv_rollback（）示例
以下示例演示如何将sqlsrv_begin_transaction（）与sqlsrv_commit（）和sqlsrv_rollback（）一起使用。
<?php
$serverName = "serverName\sqlexpress";
$connectionInfo = array( "Database"=>"dbName", "UID"=>"userName", "PWD"=>"password");
$conn = sqlsrv_connect( $serverName, $connectionInfo);
if( $conn === false ) {
die( print_r( sqlsrv_errors(), true ));
}
/* Begin the transaction. */
if ( sqlsrv_begin_transaction( $conn ) === false ) {
die( print_r( sqlsrv_errors(), true ));
}
/* Initialize parameter values. */
$orderId = 1; $qty = 10; $productId = 100;
/* Set up and execute the first query. */
$sql1 = "INSERT INTO OrdersTable (ID, Quantity, ProductID)
VALUES (?, ?, ?)";
$params1 = array( $orderId, $qty, $productId );
$stmt1 = sqlsrv_query( $conn, $sql1, $params1 );
/* Set up and execute the second query. */
$sql2 = "UPDATE InventoryTable
SET Quantity = (Quantity - ?)
WHERE ProductID = ?";
$params2 = array($qty, $productId);
$stmt2 = sqlsrv_query( $conn, $sql2, $params2 );
/* If both queries were successful, commit the transaction. */
/* Otherwise, rollback the transaction. */
if( $stmt1 && $stmt2 ) {
sqlsrv_commit( $conn );
echo "Transaction committed.<br />";
} else {
sqlsrv_rollback( $conn );
echo "Transaction rolled back.<br />";
}
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