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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace think;
use think\exception\ClassNotFoundException;
class Session
{
protected static $prefix = '';
protected static $init = null;
/**
* 设置或者获取session作用域（前缀）
* @param string $prefix
* @return string|void
*/
public static function prefix($prefix = '')
{
if (empty($prefix) && null !== $prefix) {
return self::$prefix;
} else {
self::$prefix = $prefix;
}
}
/**
* session初始化
* @param array $config
* @return void
* @throws \think\Exception
*/
public static function init(array $config = [])
{
if (empty($config)) {
$config = Config::get('session');
}
// 记录初始化信息
App::$debug && Log::record('[ SESSION ] INIT ' . var_export($config, true), 'info');
$isDoStart = false;
if (isset($config['use_trans_sid'])) {
ini_set('session.use_trans_sid', $config['use_trans_sid'] ? 1 : 0);
}
// 启动session
if (!empty($config['auto_start']) && PHP_SESSION_ACTIVE != session_status()) {
ini_set('session.auto_start', 0);
$isDoStart = true;
}
if (isset($config['prefix']) && (self::$prefix === '' || self::$prefix === null)) {
self::$prefix = $config['prefix'];
}
if (isset($config['var_session_id']) && isset($_REQUEST[$config['var_session_id']])) {
session_id($_REQUEST[$config['var_session_id']]);
} elseif (isset($config['id']) && !empty($config['id'])) {
session_id($config['id']);
}
if (isset($config['name'])) {
session_name($config['name']);
}
if (isset($config['path'])) {
session_save_path($config['path']);
}
if (isset($config['domain'])) {
ini_set('session.cookie_domain', $config['domain']);
}
if (isset($config['expire'])) {
ini_set('session.gc_maxlifetime', $config['expire']);
ini_set('session.cookie_lifetime', $config['expire']);
}
if (isset($config['secure'])) {
ini_set('session.cookie_secure', $config['secure']);
}
if (isset($config['httponly'])) {
ini_set('session.cookie_httponly', $config['httponly']);
}
if (isset($config['use_cookies'])) {
ini_set('session.use_cookies', $config['use_cookies'] ? 1 : 0);
}
if (isset($config['cache_limiter'])) {
session_cache_limiter($config['cache_limiter']);
}
if (isset($config['cache_expire'])) {
session_cache_expire($config['cache_expire']);
}
if (!empty($config['type'])) {
// 读取session驱动
$class = false !== strpos($config['type'], '\\') ? $config['type'] : '\\think\\session\\driver\\' . ucwords($config['type']);
// 检查驱动类
if (!class_exists($class) || !session_set_save_handler(new $class($config))) {
throw new ClassNotFoundException('error session handler:' . $class, $class);
}
}
if ($isDoStart) {
session_start();
self::$init = true;
} else {
self::$init = false;
}
}
/**
* session自动启动或者初始化
* @return void
*/
public static function boot()
{
if (is_null(self::$init)) {
self::init();
} elseif (false === self::$init) {
if (PHP_SESSION_ACTIVE != session_status()) {
session_start();
}
self::$init = true;
}
}
/**
* session设置
* @param string $name session名称
* @param mixed $value session值
* @param string|null $prefix 作用域（前缀）
* @return void
*/
public static function set($name, $value = '', $prefix = null)
{
empty(self::$init) && self::boot();
$prefix = !is_null($prefix) ? $prefix : self::$prefix;
if (strpos($name, '.')) {
// 二维数组赋值
list($name1, $name2) = explode('.', $name);
if ($prefix) {
$_SESSION[$prefix][$name1][$name2] = $value;
} else {
$_SESSION[$name1][$name2] = $value;
}
} elseif ($prefix) {
$_SESSION[$prefix][$name] = $value;
} else {
$_SESSION[$name] = $value;
}
}
/**
* session获取
* @param string $name session名称
* @param string|null $prefix 作用域（前缀）
* @return mixed
*/
public static function get($name = '', $prefix = null)
{
empty(self::$init) && self::boot();
$prefix = !is_null($prefix) ? $prefix : self::$prefix;
if ('' == $name) {
// 获取全部的session
$value = $prefix ? (!empty($_SESSION[$prefix]) ? $_SESSION[$prefix] : []) : $_SESSION;
} elseif ($prefix) {
// 获取session
if (strpos($name, '.')) {
list($name1, $name2) = explode('.', $name);
$value = isset($_SESSION[$prefix][$name1][$name2]) ? $_SESSION[$prefix][$name1][$name2] : null;
} else {
$value = isset($_SESSION[$prefix][$name]) ? $_SESSION[$prefix][$name] : null;
}
} else {
if (strpos($name, '.')) {
list($name1, $name2) = explode('.', $name);
$value = isset($_SESSION[$name1][$name2]) ? $_SESSION[$name1][$name2] : null;
} else {
$value = isset($_SESSION[$name]) ? $_SESSION[$name] : null;
}
}
return $value;
}
/**
* session获取并删除
* @param string $name session名称
* @param string|null $prefix 作用域（前缀）
* @return mixed
*/
public static function pull($name, $prefix = null)
{
$result = self::get($name, $prefix);
if ($result) {
self::delete($name, $prefix);
return $result;
} else {
return;
}
}
/**
* session设置 下一次请求有效
* @param string $name session名称
* @param mixed $value session值
* @param string|null $prefix 作用域（前缀）
* @return void
*/
public static function flash($name, $value)
{
self::set($name, $value);
if (!self::has('__flash__.__time__')) {
self::set('__flash__.__time__', $_SERVER['REQUEST_TIME_FLOAT']);
}
self::push('__flash__', $name);
}
/**
* 清空当前请求的session数据
* @return void
*/
public static function flush()
{
if (self::$init) {
$item = self::get('__flash__');
if (!empty($item)) {
$time = $item['__time__'];
if ($_SERVER['REQUEST_TIME_FLOAT'] > $time) {
unset($item['__time__']);
self::delete($item);
self::set('__flash__', []);
}
}
}
}
/**
* 删除session数据
* @param string|array $name session名称
* @param string|null $prefix 作用域（前缀）
* @return void
*/
public static function delete($name, $prefix = null)
{
empty(self::$init) && self::boot();
$prefix = !is_null($prefix) ? $prefix : self::$prefix;
if (is_array($name)) {
foreach ($name as $key) {
self::delete($key, $prefix);
}
} elseif (strpos($name, '.')) {
list($name1, $name2) = explode('.', $name);
if ($prefix) {
unset($_SESSION[$prefix][$name1][$name2]);
} else {
unset($_SESSION[$name1][$name2]);
}
} else {
if ($prefix) {
unset($_SESSION[$prefix][$name]);
} else {
unset($_SESSION[$name]);
}
}
}
/**
* 清空session数据
* @param string|null $prefix 作用域（前缀）
* @return void
*/
public static function clear($prefix = null)
{
empty(self::$init) && self::boot();
$prefix = !is_null($prefix) ? $prefix : self::$prefix;
if ($prefix) {
unset($_SESSION[$prefix]);
} else {
$_SESSION = [];
}
}
/**
* 判断session数据
* @param string $name session名称
* @param string|null $prefix
* @return bool
*/
public static function has($name, $prefix = null)
{
empty(self::$init) && self::boot();
$prefix = !is_null($prefix) ? $prefix : self::$prefix;
if (strpos($name, '.')) {
// 支持数组
list($name1, $name2) = explode('.', $name);
return $prefix ? isset($_SESSION[$prefix][$name1][$name2]) : isset($_SESSION[$name1][$name2]);
} else {
return $prefix ? isset($_SESSION[$prefix][$name]) : isset($_SESSION[$name]);
}
}
/**
* 添加数据到一个session数组
* @param string $key
* @param mixed $value
* @return void
*/
public static function push($key, $value)
{
$array = self::get($key);
if (is_null($array)) {
$array = [];
}
$array[] = $value;
self::set($key, $array);
}
/**
* 启动session
* @return void
*/
public static function start()
{
session_start();
self::$init = true;
}
/**
* 销毁session
* @return void
*/
public static function destroy()
{
if (!empty($_SESSION)) {
$_SESSION = [];
}
session_unset();
session_destroy();
self::$init = null;
}
/**
* 重新生成session_id
* @param bool $delete 是否删除关联会话文件
* @return void
*/
private static function regenerate($delete = false)
{
session_regenerate_id($delete);
}
/**
* 暂停session
* @return void
*/
public static function pause()
{
// 暂停session
session_write_close();
self::$init = false;
}
}
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