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   1. drupal7

Returns a new DatabaseTransaction object on this connection.

Übergabeparameter

$required If executing an operation that absolutely must use transactions, specify TRUE for this parameter. If the connection does not support transactions, this method will throw an exception and the operation will not be possible.

See also

DatabaseTransaction

Verwandte Themen

Database abstraction layer

Allow the use of different database servers using the same code base.

Code

includes/database/database.inc, line 841

<?php
public function startTransaction($required = FALSE) {
  if ($required && !$this->supportsTransactions()) {
    throw new TransactionsNotSupportedException();
  }

  if (empty($this->transactionClass)) {
    $this->transactionClass = 'DatabaseTransaction_' . $this->driver();
    if (!class_exists($this->transactionClass)) {
      $this->transactionClass = 'DatabaseTransaction';
    }
  }
  return new $this->transactionClass($this);
}
?>