Php/docs/function.sqlsrv-begin-transaction
sqlsrv_begin_transaction
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sqlsrv_begin_transaction — Begins a database transaction
说明
sqlsrv_begin_transaction
( resource $conn
) : bool
The transaction begun by sqlsrv_begin_transaction() includes all statements that were executed after the call to sqlsrv_begin_transaction() and before calls to sqlsrv_rollback() or sqlsrv_commit(). Explicit transactions should be started and committed or rolled back using these functions instead of executing SQL statements that begin and commit/roll back transactions. For more information, see » SQLSRV Transactions.
返回值
成功时返回 true， 或者在失败时返回 false。
范例
Example #1 sqlsrv_begin_transaction() example
The following example demonstrates how to use sqlsrv_begin_transaction() together with sqlsrv_commit() and sqlsrv_rollback().
<?php$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 />";}?>
以上例程的输出类似于：
参见
- sqlsrv_commit() - Commits a transaction that was begun with sqlsrv_begin_transaction
- sqlsrv_rollback() - Rolls back a transaction that was begun with sqlsrv_begin_transaction
