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Server : nginx/1.22.1 System : Linux iZwz9daxib3w3i063fw434Z 3.10.0-1127.19.1.el7.x86_64 #1 SMP Tue Aug 25 17:23:54 UTC 2020 x86_64 User : www ( 1000) PHP Version : 7.2.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv Directory : /www/wwwroot/www.jkmold.com/phpcms/libs/classes/ |
<?php
/**
* db_factory.class.php 数据库工厂类
*
* @copyright (C) 2005-2015 PHPCMS
* @license http://www.phpcms.cn/license/
* @lastmodify 2015-02-10
*/
final class db_factory {
/**
* 当前数据库工厂类静态实例
*/
private static $db_factory;
/**
* 数据库配置列表
*/
protected $db_config = array();
/**
* 数据库操作实例化列表
*/
protected $db_list = array();
/**
* 构造函数
*/
public function __construct() {
}
/**
* 返回当前终级类对象的实例
* @param $db_config 数据库配置
* @return object
*/
public static function get_instance($db_config = '') {
if($db_config == '') {
$db_config = pc_base::load_config('database');
}
if(db_factory::$db_factory == '') {
db_factory::$db_factory = new db_factory();
}
if($db_config != '' && $db_config != db_factory::$db_factory->db_config) db_factory::$db_factory->db_config = array_merge($db_config, db_factory::$db_factory->db_config);
return db_factory::$db_factory;
}
/**
* 获取数据库操作实例
* @param $db_name 数据库配置名称
*/
public function get_database($db_name) {
if(!isset($this->db_list[$db_name]) || !is_object($this->db_list[$db_name])) {
$this->db_list[$db_name] = $this->connect($db_name);
}
return $this->db_list[$db_name];
}
/**
* 加载数据库驱动
* @param $db_name 数据库配置名称
* @return object
*/
public function connect($db_name) {
$object = null;
switch($this->db_config[$db_name]['type']) {
case 'mysql' :
pc_base::load_sys_class('mysql', '', 0);
$object = new mysql();
break;
case 'mysqli' :
pc_base::load_sys_class('db_mysqli', '', 0);
$object = new db_mysqli();
break;
case 'access' :
$object = pc_base::load_sys_class('db_access');
break;
default :
pc_base::load_sys_class('mysql', '', 0);
$object = new mysql();
}
$object->open($this->db_config[$db_name]);
return $object;
}
/**
* 关闭数据库连接
* @return void
*/
protected function close() {
foreach($this->db_list as $db) {
$db->close();
}
}
/**
* 析构函数
*/
public function __destruct() {
$this->close();
}
}
?>