优化数据库引擎和字符集思路

很多时候像事务之类的要Innodb才支持，如果给你优化，你怎么通过代码然后让客户可以自己点击实现呢？

直接上代码：

public function run()
{
    if (!$this->validate()) {
        return $this->errorResponse;
    }
    switch ($this->action) {
        case 'optimize_engine':
            return $this->optimizeEngine();
            break;
        case 'optimize_charset':
            return $this->optimizeCharset();
            break;
        default:
            return [
                'code' => 1,
                'msg' => '错误的请求。',
            ];
            break;
    }
}

protected function optimizeEngine()
{
    $engineName = 'InnoDB';
    $engineList = $this->getSupportDbEngineList();
    if (!in_array($engineName, $engineList)) {
        return [
            'code' => 1,
            'msg' => '您的数据库不支持InnoDB引擎，无法完成操作。',
        ];
    }
    $sqlFile = __DIR__ . '/optimize-sql/optimize-engine.sql';
    if (!file_exists($sqlFile)) {
        return [
            'code' => 1,
            'msg' => '优化的文件不存在，无法完成操作。',
        ];
    }
    $sql = file_get_contents($sqlFile);
    $sql = $this->transSql($sql);
    \Yii::$app->db->createCommand($sql)->execute();
    return [
        'code' => 0,
        'msg' => '操作完成。',
    ];
}

protected function optimizeCharset()
{
    $charsetName = 'utf8mb4';
    $charsetList = $this->getSupportDbCharsetList();
    if (!in_array($charsetName, $charsetList)) {
        return [
            'code' => 1,
            'msg' => '您的数据库不支持utf8mb4字符集，无法完成操作。',
        ];
    }
    $sqlFile = __DIR__ . '/optimize-sql/optimize-charset.sql';
    if (!file_exists($sqlFile)) {
        return [
            'code' => 1,
            'msg' => '优化的文件不存在，无法完成操作。',
        ];
    }
    $sql = file_get_contents($sqlFile);
    $sql = $this->transSql($sql);
    \Yii::$app->db->createCommand($sql)->execute();
    return [
        'code' => 0,
        'msg' => '操作完成。',
    ];
}

protected function getSupportDbEngineList()
{
    $sql = 'SHOW ENGINES';
    $list = \Yii::$app->db->createCommand($sql)->queryAll();
    $engineList = [];
    foreach ($list as $item) {
        if (isset($item['Engine']) && isset($item['Support']) && ($item['Support'] == 'YES' || $item['Support'] == 'DEFAULT')) {
            $engineList[] = $item['Engine'];
        }
    }
    return $engineList;
}

protected function getSupportDbCharsetList()
{
    $sql = 'SHOW CHARSET';
    $list = \Yii::$app->db->createCommand($sql)->queryAll();
    $charsetList = [];
    foreach ($list as $item) {
        if (isset($item['Charset'])) {
            $charsetList[] = $item['Charset'];
        }
    }
    return $charsetList;
}

/**
 * 表名称转换（独立版表前缀与微擎版表前缀不一样）
 */
protected function transSql($sql)
{
    $rawTablePrefix = 'xcxmall_';
    $tablePrefix = \Yii::$app->db->tablePrefix;
    if ($rawTablePrefix == $tablePrefix) {
        return $sql;
    }
    $sql = str_replace($rawTablePrefix, $tablePrefix, $sql);
    return $sql;
}