php实例分享之mysql数据备份(2)

//备份数据库
    public function getBackUpDataByTable ($tables, $path='', $fileName = 'seocheck', $subsection = '2') {
        if(empty($tables)) $this->_showMsg('未能指定要备份的表!!!', true);
        $page = 0;//卷数
        $path = empty($path) ? $_SERVER['DOCUMENT_ROOT'].'/core/Runtime/Data/'.$fileName.'Demo/' : $path;
        if(!file_exists($path)) {
            mkdir($path, 0777, true);
        }
        $mysql_info = $this->_retrieve();
        $fieldsByTable = array();
        if(is_array($tables)) {
            $this->_showMsg('开始备份,数据正在初始化中,请勿关闭浏览器...');
            $fw = $this->writeFileByBackUpData($path.$this->dbName.'_table.sql', $mysql_info, $method="ab+");
            if($fw !== false) {
                $this->_showMsg('备份数据库基本信息成功。。。');
            }
            foreach ($tables as $table) {
                $tableInfo = $this->getFieldsByTable($table);
                if(!empty($tableInfo)) {
                    $this->_showMsg('获取表['.$table.']结构成功。。。');
                    $fw = $this->writeFileByBackUpData($path.$this->dbName.'_table.sql', $tableInfo[$table], $method="ab+");
                    if($fw === false) {
                        $this->_showMsg('备份表['.$table.']结构失败。。。', true);
                    } else {
                        $this->_showMsg('备份表['.$table.']结构成功,开始获取数据。。。');
                    };
                } else {
                    $this->_showMsg('获取数据库['.$this->dbName.']表结构失败,请稍后再试！。。。', true);
                }
                $this->_insertSqlByTableForAll($path, $table, $subsection);
            }
        } else {
            $this->_showMsg('开始备份,数据正在初始化中,请勿关闭浏览器...');
            $tableInfo = $this->getFieldsByTable($tables);
            if(!empty($tableInfo)) {
                $this->_showMsg('获取表['.$tables.']结构成功。。。');
                $fw = $this->writeFileByBackUpData($path.$this->dbName.'_'.$tables.'_table.sql', $mysql_info.$tableInfo[$tables]);
                if($fw === false) {
                    $this->_showMsg('备份表['.$tables.']结构失败。。。', true);
                } else {
                    $this->_showMsg('备份表['.$tables.']结构成功,开始获取数据。。。');
                }
            } else {
                $this->_showMsg('获取表['.$tables.']结构失败,请稍后再试！。。。', true);
            }
            $res = $this->_insertSqlByTableForAll($path, $tables, $subsection);
        }
    }