522 lines
17 KiB
PHP
522 lines
17 KiB
PHP
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<?php
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// +----------------------------------------------------------------------
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// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2016~2022 https://www.crmeb.com All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
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// +----------------------------------------------------------------------
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// | Author: CRMEB Team <admin@crmeb.com>
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// +----------------------------------------------------------------------
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// +----------------------------------------------------------------------
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// | origin:tp5er\tp5-databackup
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// +----------------------------------------------------------------------
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namespace crmeb\services;
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use think\facade\Db;
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class MysqlBackupService
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{
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/**
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* 文件指针
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* @var resource
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*/
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private $fp;
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/**
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* 备份文件信息 part - 卷号，name - 文件名
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* @var array
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*/
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private $file;
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/**
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* 当前打开文件大小
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* @var integer
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*/
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private $size = 0;
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/**
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* 数据库配置
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* @var integer
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*/
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private $dbconfig = array();
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/**
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* 备份配置
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* @var integer
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*/
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private $config = array(
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'path' => './Data/',
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//数据库备份路径
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'part' => 20971520,
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//数据库备份卷大小
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'compress' => 0,
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//数据库备份文件是否启用压缩 0不压缩 1 压缩
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'level' => 9,
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);
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/**
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* 数据库备份构造方法
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*
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* @param array $file 备份或还原的文件信息
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* @param array $config 备份配置信息
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*/
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public function __construct($config = [])
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{
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$this->config['path'] = app()->getRootPath() . 'backup/';
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$this->config = array_merge($this->config, $config);
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//初始化文件名
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$this->setFile();
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//初始化数据库连接参数
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$this->setDbConn();
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//检查文件是否可写
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if (!$this->checkPath($this->config['path'])) {
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throw new \Exception("The current directory is not writable");
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}
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}
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/**
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* 设置脚本运行超时时间
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* 0表示不限制，支持连贯操作
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*/
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public function setTimeout($time = null)
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{
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if (!is_null($time)) {
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set_time_limit($time) || ini_set("max_execution_time", $time);
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}
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return $this;
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}
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/**
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* 设置数据库连接必备参数
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*
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* @param array $dbconfig 数据库连接配置信息
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* @return $this
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*/
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public function setDbConn($dbconfig = [])
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{
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if (empty($dbconfig)) {
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$this->dbconfig = config('database.connections.' . config('database.default'));
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//$this->dbconfig = Config::get('database');
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} else {
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$this->dbconfig = $dbconfig;
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}
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return $this;
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}
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/**
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* 设置备份文件名
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*
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* @param null $file
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* @return $this
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*/
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public function setFile($file = null)
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{
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if (is_null($file)) {
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$this->file = ['name' => date('Ymd-His'), 'part' => 1];
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} else {
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if (!array_key_exists("name", $file) && !array_key_exists("part", $file)) {
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$this->file = $file['1'];
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} else {
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$this->file = $file;
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}
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}
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return $this;
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}
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//数据类连接
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public static function connect()
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{
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return Db::connect();
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}
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/**
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* 数据库表列表
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*
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* @param null $table
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* @param int $type
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* @return array
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* @throws \think\db\exception\BindParamException
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* @throws \think\exception\PDOException
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*/
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public function dataList(?string $table = null, int $type = 1)
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{
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$db = self::connect();
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if (is_null($table)) {
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$list = $db->query("SHOW TABLE STATUS");
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} else {
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if ($type) {
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$list = $db->query("SHOW FULL COLUMNS FROM {$table}");
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} else {
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$list = $db->query("show columns from {$table}");
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}
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}
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return array_map('array_change_key_case', $list);
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//$list;
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}
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/**
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* 数据库备份文件列表
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*
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* @return array
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*/
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public function fileList()
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{
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if (!is_dir($this->config['path'])) {
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mkdir($this->config['path'], 0755, true);
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}
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$path = realpath($this->config['path']);
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$flag = \FilesystemIterator::KEY_AS_FILENAME;
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$glob = new \FilesystemIterator($path, $flag);
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$list = array();
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foreach ($glob as $name => $file) {
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if (preg_match('/^\\d{8,8}-\\d{6,6}-\\d+\\.sql(?:\\.gz)?$/', $name)) {
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$info['filename'] = $name;
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$name = sscanf($name, '%4s%2s%2s-%2s%2s%2s-%d');
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$date = "{$name[0]}-{$name[1]}-{$name[2]}";
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$time = "{$name[3]}:{$name[4]}:{$name[5]}";
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$part = $name[6];
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if (isset($list["{$date} {$time}"])) {
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$info = $list["{$date} {$time}"];
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$info['part'] = max($info['part'], $part);
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$info['size'] = $info['size'] + $file->getSize();
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} else {
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$info['part'] = $part;
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$info['size'] = $file->getSize();
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}
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$extension = strtoupper(pathinfo($file->getFilename(), PATHINFO_EXTENSION));
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$info['compress'] = $extension === 'SQL' ? '-' : $extension;
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$info['time'] = strtotime("{$date} {$time}");
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$list["{$date} {$time}"] = $info;
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}
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}
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return $list;
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}
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/**
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* @param string $type
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* @param int $time
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* @return array|false|string
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* @throws \Exception
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*/
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public function getFile($type = '', $time = 0)
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{
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//
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if (!is_numeric($time)) {
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throw new \Exception("{$time} Illegal data type");
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}
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switch ($type) {
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case 'time':
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$name = date('Ymd-His', $time) . '-*.sql*';
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$path = realpath($this->config['path']) . DIRECTORY_SEPARATOR . $name;
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return glob($path);
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break;
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case 'timeverif':
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$name = date('Ymd-His', $time) . '-*.sql*';
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$path = realpath($this->config['path']) . DIRECTORY_SEPARATOR . $name;
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$files = glob($path);
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$list = array();
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foreach ($files as $name) {
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$basename = basename($name);
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$match = sscanf($basename, '%4s%2s%2s-%2s%2s%2s-%d');
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$gz = preg_match('/^\\d{8,8}-\\d{6,6}-\\d+\\.sql.gz$/', $basename);
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$list[$match[6]] = array($match[6], $name, $gz);
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}
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$last = end($list);
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if (count($list) === $last[0]) {
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return $list;
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} else {
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throw new \Exception("File {$files['0']} may be damaged, please check again");
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}
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break;
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case 'pathname':
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return "{$this->config['path']}{$this->file['name']}-{$this->file['part']}.sql";
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break;
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case 'filename':
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return "{$this->file['name']}-{$this->file['part']}.sql";
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break;
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case 'filepath':
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return $this->config['path'];
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break;
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default:
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$arr = array('pathname' => "{$this->config['path']}{$this->file['name']}-{$this->file['part']}.sql", 'filename' => "{$this->file['name']}-{$this->file['part']}.sql", 'filepath' => $this->config['path'], 'file' => $this->file);
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return $arr;
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}
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}
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/**
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* 删除备份文件
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* @param $time
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* @return mixed
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* @throws \Exception
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*/
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public function delFile($time)
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{
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if ($time) {
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$file = $this->getFile('time', $time);
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array_map("unlink", $this->getFile('time', $time));
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if (count($this->getFile('time', $time))) {
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throw new \Exception("File {$time} deleted failed");
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} else {
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return $time;
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}
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} else {
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throw new \Exception("{$time} Time parameter is incorrect");
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}
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}
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/**
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* 下载备份
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*
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* @param $time
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* @param int $part
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* @throws \Exception
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*/
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public function downloadFile($time, $part = 0)
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{
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$file = $this->getFile('time', $time);
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$fileName = $file[$part];
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if (file_exists($fileName)) {
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ob_end_clean();
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header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
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header('Content-Description: File Transfer');
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header('Content-Type: application/octet-stream');
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header('Content-Length: ' . filesize($fileName));
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header('Content-Disposition: attachment; filename=' . basename($fileName));
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readfile($fileName);
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} else {
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throw new \Exception("{$time} File is abnormal");
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}
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}
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public function import($start)
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{
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//还原数据
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$db = self::connect();
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if ($this->config['compress']) {
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$gz = gzopen($this->file[1], 'r');
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$size = 0;
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} else {
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$size = filesize($this->file[1]);
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$gz = fopen($this->file[1], 'r');
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}
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$sql = '';
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if ($start) {
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$this->config['compress'] ? gzseek($gz, $start) : fseek($gz, $start);
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}
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for ($i = 0; $i < 1000; $i++) {
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$sql .= $this->config['compress'] ? gzgets($gz) : fgets($gz);
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if (preg_match('/.*;$/', trim($sql))) {
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if (false !== $db->execute($sql)) {
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$start += strlen($sql);
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} else {
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return false;
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}
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$sql = '';
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} elseif ($this->config['compress'] ? gzeof($gz) : feof($gz)) {
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return 0;
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}
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}
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return array($start, $size);
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}
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/**
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* 写入初始数据
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*
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* @return boolean true - 写入成功，false - 写入失败
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*/
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public function Backup_Init()
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{
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$sql = "-- -----------------------------\n";
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$sql .= "-- Think MySQL Data Transfer \n";
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$sql .= "-- \n";
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$sql .= "-- Host : " . $this->dbconfig['hostname'] . "\n";
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$sql .= "-- Port : " . $this->dbconfig['hostport'] . "\n";
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$sql .= "-- Database : " . $this->dbconfig['database'] . "\n";
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$sql .= "-- \n";
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$sql .= "-- Part : #{$this->file['part']}\n";
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$sql .= "-- Date : " . date("Y-m-d H:i:s") . "\n";
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$sql .= "-- -----------------------------\n\n";
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$sql .= "SET FOREIGN_KEY_CHECKS = 0;\n\n";
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return $this->write($sql);
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}
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/**
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* 备份表结构
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*
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* @param string $table
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* @param int $start
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* @return bool|int
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* @throws \think\db\exception\BindParamException
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* @throws \think\exception\PDOException
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*/
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public function backup(string $table, int $start)
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{
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$db = self::connect();
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// 备份表结构
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if (0 == $start) {
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$result = $db->query("SHOW CREATE TABLE `{$table}`");
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$sql = "\n";
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$sql .= "-- -----------------------------\n";
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|
|
$sql .= "-- Table structure for `{$table}`\n";
|
|||
|
|
$sql .= "-- -----------------------------\n";
|
|||
|
|
$sql .= "DROP TABLE IF EXISTS `{$table}`;\n";
|
|||
|
|
$sql .= trim($result[0]['Create Table']) . ";\n\n";
|
|||
|
|
if (false === $this->write($sql)) {
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
//数据总数
|
|||
|
|
$result = $db->query("SELECT COUNT(*) AS count FROM `{$table}`");
|
|||
|
|
$count = $result['0']['count'];
|
|||
|
|
//备份表数据
|
|||
|
|
if ($count) {
|
|||
|
|
//写入数据注释
|
|||
|
|
if (0 == $start) {
|
|||
|
|
$sql = "-- -----------------------------\n";
|
|||
|
|
$sql .= "-- Records of `{$table}`\n";
|
|||
|
|
$sql .= "-- -----------------------------\n";
|
|||
|
|
$this->write($sql);
|
|||
|
|
}
|
|||
|
|
//备份数据记录
|
|||
|
|
$result = $db->query("SELECT * FROM `{$table}` LIMIT :MIN, 1000", ['MIN' => intval($start)]);
|
|||
|
|
foreach ($result as $row) {
|
|||
|
|
$row = array_map('addslashes', $row);
|
|||
|
|
$sql = "INSERT INTO `{$table}` VALUES ('" . str_replace(array("\r", "\n"), array('\\r', '\\n'), implode("', '", $row)) . "');\n";
|
|||
|
|
if (false === $this->write($sql)) {
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
//还有更多数据
|
|||
|
|
if ($count > $start + 1000) {
|
|||
|
|
//return array($start + 1000, $count);
|
|||
|
|
return $this->backup($table, $start + 1000);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
//备份下一表
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 优化表
|
|||
|
|
*
|
|||
|
|
* @param array|string $tables
|
|||
|
|
* @throws \think\db\exception\BindParamException
|
|||
|
|
* @throws \think\exception\PDOException
|
|||
|
|
*/
|
|||
|
|
public function optimize($tables)
|
|||
|
|
{
|
|||
|
|
if ($tables) {
|
|||
|
|
$db = self::connect();
|
|||
|
|
if (is_array($tables)) {
|
|||
|
|
$tables = implode('`,`', $tables);
|
|||
|
|
$list = $db->query("OPTIMIZE TABLE `{$tables}`");
|
|||
|
|
} else {
|
|||
|
|
$list = $db->query("OPTIMIZE TABLE `{$tables}`");
|
|||
|
|
}
|
|||
|
|
if (!$list) {
|
|||
|
|
throw new \Exception("data sheet'{$tables}'Repair mistakes please try again!");
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
throw new \Exception("Please specify the table to be repaired!");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 修复表
|
|||
|
|
*
|
|||
|
|
* @param string|null $tables
|
|||
|
|
* @return array
|
|||
|
|
* @throws \think\db\exception\BindParamException
|
|||
|
|
* @throws \think\exception\PDOException
|
|||
|
|
*/
|
|||
|
|
public function repair(?string $tables = null)
|
|||
|
|
{
|
|||
|
|
if ($tables) {
|
|||
|
|
$db = self::connect();
|
|||
|
|
if (is_array($tables)) {
|
|||
|
|
$tables = implode('`,`', $tables);
|
|||
|
|
$list = $db->query("REPAIR TABLE `{$tables}`");
|
|||
|
|
} else {
|
|||
|
|
$list = $db->query("REPAIR TABLE `{$tables}`");
|
|||
|
|
}
|
|||
|
|
if ($list) {
|
|||
|
|
return $list;
|
|||
|
|
} else {
|
|||
|
|
throw new \Exception("data sheet'{$tables}'Repair mistakes please try again!");
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
throw new \Exception("Please specify the table to be repaired!");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 写入SQL语句
|
|||
|
|
*
|
|||
|
|
* @param string $sql 要写入的SQL语句
|
|||
|
|
* @return boolean true - 写入成功，false - 写入失败！
|
|||
|
|
*/
|
|||
|
|
private function write(string $sql)
|
|||
|
|
{
|
|||
|
|
$size = strlen($sql);
|
|||
|
|
//由于压缩原因，无法计算出压缩后的长度，这里假设压缩率为50%，
|
|||
|
|
//一般情况压缩率都会高于50%；
|
|||
|
|
$size = $this->config['compress'] ? $size / 2 : $size;
|
|||
|
|
$this->open($size);
|
|||
|
|
return $this->config['compress'] ? @gzwrite($this->fp, $sql) : @fwrite($this->fp, $sql);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 打开一个卷，用于写入数据
|
|||
|
|
*
|
|||
|
|
* @param integer $size 写入数据的大小
|
|||
|
|
*/
|
|||
|
|
private function open(int $size)
|
|||
|
|
{
|
|||
|
|
if ($this->fp) {
|
|||
|
|
$this->size += $size;
|
|||
|
|
if ($this->size > $this->config['part']) {
|
|||
|
|
$this->config['compress'] ? @gzclose($this->fp) : @fclose($this->fp);
|
|||
|
|
$this->fp = null;
|
|||
|
|
$this->file['part']++;
|
|||
|
|
session('backup_file', $this->file);
|
|||
|
|
$this->Backup_Init();
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
$backuppath = $this->config['path'];
|
|||
|
|
$filename = "{$backuppath}{$this->file['name']}-{$this->file['part']}.sql";
|
|||
|
|
if ($this->config['compress']) {
|
|||
|
|
$filename = "{$filename}.gz";
|
|||
|
|
$this->fp = @gzopen($filename, "a{$this->config['level']}");
|
|||
|
|
} else {
|
|||
|
|
$this->fp = @fopen($filename, 'a');
|
|||
|
|
}
|
|||
|
|
$this->size = filesize($filename) + $size;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 检查目录是否可写
|
|||
|
|
*
|
|||
|
|
* @param string $path
|
|||
|
|
* @return bool
|
|||
|
|
*/
|
|||
|
|
protected function checkPath(string $path)
|
|||
|
|
{
|
|||
|
|
if (is_dir($path)) {
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
if (mkdir($path, 0755, true)) {
|
|||
|
|
return true;
|
|||
|
|
} else {
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 析构方法，用于关闭文件资源
|
|||
|
|
*/
|
|||
|
|
public function __destruct()
|
|||
|
|
{
|
|||
|
|
$this->config['compress'] ? @gzclose($this->fp) : @fclose($this->fp);
|
|||
|
|
}
|
|||
|
|
}
|