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sqlsrv_rollback

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sqlsrv_rollbackRolls back a transaction that was begun with sqlsrv_begin_transaction()

说明

sqlsrv_rollback(resource $conn): bool

Rolls back a transaction that was begun with sqlsrv_begin_transaction() and returns the connection to auto-commit mode.

参数

conn

The connection resource returned by a call to sqlsrv_connect().

返回值

成功时返回 true, 或者在失败时返回 false

范例

示例 #1 sqlsrv_rollback() example

The following example demonstrates how to use sqlsrv_begin_transaction() together with sqlsrv_commit() and sqlsrv_rollback().

<?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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