使用MSSQL进行PHP数据库回滚

Question

I am new in the MSSQL. i have create a database in MSSQL. Now all is working fine like add/edit/delete. i am adding 3 record in 3 different table at the same time in same of different database. I want to use Rollback in the database. Suppose i am adding three record at the same time. First two work properly and last query find some issue in adding it in the table. At this time i want to remove the first two query which is inserted in the table. can anyone help me for this issue ?

if you have another option to solve this issue then let me know

Thanks in advance

Answer 1

Use sqlsrv_begin_transaction() function to begin a transaction. Then, you can either commit it by calling sqlsrv_commit() function or roll it back by calling sqlsrv_rollback() function.

Example from php.net manual

<?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 />";
}
?>