function Database::closeConnection

Closes a connection to the server specified by the given key and target.

Parameters

string $target: The database target name. Defaults to NULL meaning that all target connections will be closed.

string $key: The database connection key. Defaults to NULL which means the active key.

File

core/lib/Drupal/Core/Database/Database.php, line 397

Class

Database

Primary front-controller for the database system.

Namespace

Code

public static function closeConnection($target = NULL, $key = NULL) {
    // Gets the active connection by default.
    if (!isset($key)) {
        $key = self::$activeKey;
    }
    // To close a connection, it needs to be set to NULL and removed from the
    // static variable. In all cases, closeConnection() might be called for a
    // connection that was not opened yet, in which case the key is not defined
    // yet and we just ensure that the connection key is undefined.
    if (isset($target)) {
        if (isset(self::$connections[$key][$target])) {
            self::$connections[$key][$target]->destroy();
            self::$connections[$key][$target] = NULL;
        }
        unset(self::$connections[$key][$target]);
    }
    else {
        if (isset(self::$connections[$key])) {
            foreach (self::$connections[$key] as $target => $connection) {
                self::$connections[$key][$target]->destroy();
                self::$connections[$key][$target] = NULL;
            }
        }
        unset(self::$connections[$key]);
    }
}