Rolls back current transaction

# MysqlndUhConnection::txRollback

(PECL mysqlnd-uh >= 1.0.1-alpha)

MysqlndUhConnection::txRollback — Rolls back current transaction

### 説明

public MysqlndUhConnection::txRollback ( mysqlnd_connection `$connection` ) : bool

Rolls back current transaction.

### パラメータ

`connection`

  Mysqlnd connection handle. Do not modify!

### 返り値

Returns `TRUE` on success. Otherwise, returns `FALSE`

### 例

例1 MysqlndUhConnection::txRollback() example

`<?php
class proxy extends MysqlndUhConnection {
public function txRollback($res) {
printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
$ret = parent::txRollback($res);
printf("%s returns %s\n", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->rollback();
?>`

上の例の出力は以下となります。

    proxy::txRollback(array (
      0 => NULL,
    ))
    proxy::txRollback returns true

### 参考

- mysqlnd_uh_set_connection_proxy() - Installs a proxy for mysqlnd connections
- mysqli_commit() - 現在のトランザクションをコミットする