You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
181 lines
6.7 KiB
181 lines
6.7 KiB
<?php
|
|
// +----------------------------------------------------------------------
|
|
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
|
|
// +----------------------------------------------------------------------
|
|
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
|
|
// +----------------------------------------------------------------------
|
|
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
|
|
// +----------------------------------------------------------------------
|
|
// | Author: liu21st <liu21st@gmail.com>
|
|
// +----------------------------------------------------------------------
|
|
|
|
namespace think;
|
|
|
|
use think\db\Connection;
|
|
use think\db\Query;
|
|
|
|
/**
|
|
* Class Db
|
|
* @package think
|
|
* @method Query table(string $table) static 指定数据表（含前缀）
|
|
* @method Query name(string $name) static 指定数据表（不含前缀）
|
|
* @method Query where(mixed $field, string $op = null, mixed $condition = null) static 查询条件
|
|
* @method Query join(mixed $join, mixed $condition = null, string $type = 'INNER') static JOIN查询
|
|
* @method Query union(mixed $union, boolean $all = false) static UNION查询
|
|
* @method Query limit(mixed $offset, integer $length = null) static 查询LIMIT
|
|
* @method Query order(mixed $field, string $order = null) static 查询ORDER
|
|
* @method Query cache(mixed $key = null , integer $expire = null) static 设置查询缓存
|
|
* @method mixed value(string $field) static 获取某个字段的值
|
|
* @method array column(string $field, string $key = '') static 获取某个列的值
|
|
* @method Query view(mixed $join, mixed $field = null, mixed $on = null, string $type = 'INNER') static 视图查询
|
|
* @method mixed find(mixed $data = null) static 查询单个记录
|
|
* @method mixed select(mixed $data = null) static 查询多个记录
|
|
* @method integer insert(array $data, boolean $replace = false, boolean $getLastInsID = false, string $sequence = null) static 插入一条记录
|
|
* @method integer insertGetId(array $data, boolean $replace = false, string $sequence = null) static 插入一条记录并返回自增ID
|
|
* @method integer insertAll(array $dataSet) static 插入多条记录
|
|
* @method integer update(array $data) static 更新记录
|
|
* @method integer delete(mixed $data = null) static 删除记录
|
|
* @method boolean chunk(integer $count, callable $callback, string $column = null) static 分块获取数据
|
|
* @method mixed query(string $sql, array $bind = [], boolean $master = false, bool $pdo = false) static SQL查询
|
|
* @method integer execute(string $sql, array $bind = [], boolean $fetch = false, boolean $getLastInsID = false, string $sequence = null) static SQL执行
|
|
* @method Paginator paginate(integer $listRows = 15, mixed $simple = null, array $config = []) static 分页查询
|
|
* @method mixed transaction(callable $callback) static 执行数据库事务
|
|
* @method void startTrans() static 启动事务
|
|
* @method void commit() static 用于非自动提交状态下面的查询提交
|
|
* @method void rollback() static 事务回滚
|
|
* @method boolean batchQuery(array $sqlArray) static 批处理执行SQL语句
|
|
* @method string quote(string $str) static SQL指令安全过滤
|
|
* @method string getLastInsID($sequence = null) static 获取最近插入的ID
|
|
*/
|
|
class Db
|
|
{
|
|
/**
|
|
* @var Connection[] 数据库连接实例
|
|
*/
|
|
private static $instance = [];
|
|
|
|
/**
|
|
* @var int 查询次数
|
|
*/
|
|
public static $queryTimes = 0;
|
|
|
|
/**
|
|
* @var int 执行次数
|
|
*/
|
|
public static $executeTimes = 0;
|
|
|
|
/**
|
|
* 数据库初始化，并取得数据库类实例
|
|
* @access public
|
|
* @param mixed $config 连接配置
|
|
* @param bool|string $name 连接标识 true 强制重新连接
|
|
* @return Connection
|
|
* @throws Exception
|
|
*/
|
|
public static function connect($config = [], $name = false)
|
|
{
|
|
if (false === $name) {
|
|
$name = md5(serialize($config));
|
|
}
|
|
|
|
if (true === $name || !isset(self::$instance[$name])) {
|
|
// 解析连接参数 支持数组和字符串
|
|
$options = self::parseConfig($config);
|
|
|
|
if (empty($options['type'])) {
|
|
throw new \InvalidArgumentException('Undefined db type');
|
|
}
|
|
|
|
$class = false !== strpos($options['type'], '\\') ?
|
|
$options['type'] :
|
|
'\\think\\db\\connector\\' . ucwords($options['type']);
|
|
|
|
// 记录初始化信息
|
|
if (App::$debug) {
|
|
Log::record('[ DB ] INIT ' . $options['type'], 'info');
|
|
}
|
|
|
|
if (true === $name) {
|
|
$name = md5(serialize($config));
|
|
}
|
|
|
|
self::$instance[$name] = new $class($options);
|
|
}
|
|
|
|
return self::$instance[$name];
|
|
}
|
|
|
|
/**
|
|
* 清除连接实例
|
|
* @access public
|
|
* @return void
|
|
*/
|
|
public static function clear()
|
|
{
|
|
self::$instance = [];
|
|
}
|
|
|
|
/**
|
|
* 数据库连接参数解析
|
|
* @access private
|
|
* @param mixed $config 连接参数
|
|
* @return array
|
|
*/
|
|
private static function parseConfig($config)
|
|
{
|
|
if (empty($config)) {
|
|
$config = Config::get('database');
|
|
} elseif (is_string($config) && false === strpos($config, '/')) {
|
|
$config = Config::get($config); // 支持读取配置参数
|
|
}
|
|
|
|
return is_string($config) ? self::parseDsn($config) : $config;
|
|
}
|
|
|
|
/**
|
|
* DSN 解析
|
|
* 格式： mysql://username:passwd@localhost:3306/DbName?param1=val1¶m2=val2#utf8
|
|
* @access private
|
|
* @param string $dsnStr 数据库 DSN 字符串解析
|
|
* @return array
|
|
*/
|
|
private static function parseDsn($dsnStr)
|
|
{
|
|
$info = parse_url($dsnStr);
|
|
|
|
if (!$info) {
|
|
return [];
|
|
}
|
|
|
|
$dsn = [
|
|
'type' => $info['scheme'],
|
|
'username' => isset($info['user']) ? $info['user'] : '',
|
|
'password' => isset($info['pass']) ? $info['pass'] : '',
|
|
'hostname' => isset($info['host']) ? $info['host'] : '',
|
|
'hostport' => isset($info['port']) ? $info['port'] : '',
|
|
'database' => !empty($info['path']) ? ltrim($info['path'], '/') : '',
|
|
'charset' => isset($info['fragment']) ? $info['fragment'] : 'utf8',
|
|
];
|
|
|
|
if (isset($info['query'])) {
|
|
parse_str($info['query'], $dsn['params']);
|
|
} else {
|
|
$dsn['params'] = [];
|
|
}
|
|
|
|
return $dsn;
|
|
}
|
|
|
|
/**
|
|
* 调用驱动类的方法
|
|
* @access public
|
|
* @param string $method 方法名
|
|
* @param array $params 参数
|
|
* @return mixed
|
|
*/
|
|
public static function __callStatic($method, $params)
|
|
{
|
|
return call_user_func_array([self::connect(), $method], $params);
|
|
}
|
|
}
|