開始交易在mysql中是未定義的。我實際上使用它來在我的代碼中運行多個查詢來將一行從一個表移動到另一個表。很多幫助將不勝感激。好吧,我的問題是,爲什麼我的Begin_transaction()沒有定義?開始交易沒有定義
<?php
If(isset($trade_id)){
$trade_id= $_GET['trade_id'];
}
require_once('connect.php');
$mysqli = new mysqli($database_hostname, $database_username, $database_password, $database_name) or exit("Error connecting to database");
try {
// First of all, let's begin a transaction
$mysqli->begin_transaction();
// A set of queries; if one fails, an exception should be thrown
$mysqli->query("INSERT INTO `trade_history1` (session_id, trade_id, selection, date, type, size, bidprice, offerprice, stoploss, takeprofit, profitandloss, dateclose, close)
SELECT session_id, trade_id, selection, date, type, size, bidprice, offerprice, stoploss, takeprofit, profitandloss, dateclose, close
FROM `opentrades`
WHERE `trade_id` = " . $tradeid);
$mysqli->query("DELETE FROM `opentrades` WHERE `trade_id` = " . $trade_id);
// If we arrive here, it means that no exception was thrown
// i.e. no query has failed, and we can commit the transaction
$mysqli->commit();
$_SESSION['message'] = 'Successfully deleted';
} catch (Exception $e) {
// An exception has been thrown
// We must rollback the transaction
$_SESSION['message'] = 'Unable to delete';
$mysqli->rollback();
}
$mysqli->close();
// if we successfully delete this, we
if ($successfullyDeleted) {
$_SESSION['message'] = 'Successfully deleted';
} else {
$_SESSION['message'] = 'Unable to delete';
}
header('Location: js.php');
?>
你可以在需要更清晰? – rags
您忘記提問了。 – zerkms