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<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think;
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use think\exception\ClassNotFoundException;
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class Session
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{
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protected static $prefix = '';
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protected static $init = null;
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/**
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* 设置或者获取session作用域（前缀）
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* @param string $prefix
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* @return string|void
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*/
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public static function prefix($prefix = '')
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{
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empty(self::$init) && self::boot();
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if (empty($prefix) && null !== $prefix) {
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return self::$prefix;
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} else {
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self::$prefix = $prefix;
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}
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}
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/**
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* session初始化
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* @param array $config
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* @return void
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* @throws \think\Exception
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*/
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public static function init(array $config = [])
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{
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if (empty($config)) {
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$config = Config::get('session');
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}
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// 记录初始化信息
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App::$debug && Log::record('[ SESSION ] INIT ' . var_export($config, true), 'info');
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$isDoStart = false;
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if (isset($config['use_trans_sid'])) {
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ini_set('session.use_trans_sid', $config['use_trans_sid'] ? 1 : 0);
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}
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// 启动session
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if (!empty($config['auto_start']) && PHP_SESSION_ACTIVE != session_status()) {
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ini_set('session.auto_start', 0);
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$isDoStart = true;
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}
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if (isset($config['prefix']) && ('' === self::$prefix || null === self::$prefix)) {
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self::$prefix = $config['prefix'];
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}
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if (isset($config['var_session_id']) && isset($_REQUEST[$config['var_session_id']])) {
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session_id($_REQUEST[$config['var_session_id']]);
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} elseif (isset($config['id']) && !empty($config['id'])) {
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session_id($config['id']);
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}
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if (isset($config['name'])) {
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session_name($config['name']);
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}
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if (isset($config['path'])) {
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session_save_path($config['path']);
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}
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if (isset($config['domain'])) {
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ini_set('session.cookie_domain', $config['domain']);
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}
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if (isset($config['expire'])) {
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ini_set('session.gc_maxlifetime', $config['expire']);
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ini_set('session.cookie_lifetime', $config['expire']);
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}
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if (isset($config['secure'])) {
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ini_set('session.cookie_secure', $config['secure']);
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}
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if (isset($config['httponly'])) {
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ini_set('session.cookie_httponly', $config['httponly']);
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}
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if (isset($config['use_cookies'])) {
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ini_set('session.use_cookies', $config['use_cookies'] ? 1 : 0);
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}
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if (isset($config['cache_limiter'])) {
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session_cache_limiter($config['cache_limiter']);
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}
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if (isset($config['cache_expire'])) {
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session_cache_expire($config['cache_expire']);
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}
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if (!empty($config['type'])) {
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// 读取session驱动
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$class = false !== strpos($config['type'], '\\') ? $config['type'] : '\\think\\session\\driver\\' . ucwords($config['type']);
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// 检查驱动类
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if (!class_exists($class) || !session_set_save_handler(new $class($config))) {
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throw new ClassNotFoundException('error session handler:' . $class, $class);
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}
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}
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if ($isDoStart) {
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session_start();
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self::$init = true;
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} else {
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self::$init = false;
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}
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}
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/**
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* session自动启动或者初始化
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* @return void
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*/
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public static function boot()
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{
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if (is_null(self::$init)) {
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self::init();
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} elseif (false === self::$init) {
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if (PHP_SESSION_ACTIVE != session_status()) {
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session_start();
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}
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self::$init = true;
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}
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}
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/**
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* session设置
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* @param string $name session名称
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* @param mixed $value session值
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* @param string|null $prefix 作用域（前缀）
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* @return void
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*/
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public static function set($name, $value = '', $prefix = null)
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{
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empty(self::$init) && self::boot();
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$prefix = !is_null($prefix) ? $prefix : self::$prefix;
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if (strpos($name, '.')) {
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// 二维数组赋值
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list($name1, $name2) = explode('.', $name);
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if ($prefix) {
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$_SESSION[$prefix][$name1][$name2] = $value;
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} else {
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$_SESSION[$name1][$name2] = $value;
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}
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} elseif ($prefix) {
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$_SESSION[$prefix][$name] = $value;
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} else {
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$_SESSION[$name] = $value;
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}
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}
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/**
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* session获取
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* @param string $name session名称
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* @param string|null $prefix 作用域（前缀）
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* @return mixed
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*/
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public static function get($name = '', $prefix = null)
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{
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empty(self::$init) && self::boot();
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$prefix = !is_null($prefix) ? $prefix : self::$prefix;
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if ('' == $name) {
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// 获取全部的session
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$value = $prefix ? (!empty($_SESSION[$prefix]) ? $_SESSION[$prefix] : []) : $_SESSION;
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} elseif ($prefix) {
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// 获取session
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if (strpos($name, '.')) {
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list($name1, $name2) = explode('.', $name);
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$value = isset($_SESSION[$prefix][$name1][$name2]) ? $_SESSION[$prefix][$name1][$name2] : null;
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} else {
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$value = isset($_SESSION[$prefix][$name]) ? $_SESSION[$prefix][$name] : null;
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}
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} else {
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if (strpos($name, '.')) {
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list($name1, $name2) = explode('.', $name);
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$value = isset($_SESSION[$name1][$name2]) ? $_SESSION[$name1][$name2] : null;
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} else {
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$value = isset($_SESSION[$name]) ? $_SESSION[$name] : null;
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}
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}
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return $value;
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}
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/**
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* session获取并删除
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* @param string $name session名称
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* @param string|null $prefix 作用域（前缀）
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* @return mixed
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*/
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public static function pull($name, $prefix = null)
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{
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$result = self::get($name, $prefix);
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if ($result) {
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self::delete($name, $prefix);
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return $result;
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} else {
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return;
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}
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}
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/**
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* session设置 下一次请求有效
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* @param string $name session名称
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* @param mixed $value session值
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* @param string|null $prefix 作用域（前缀）
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* @return void
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*/
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public static function flash($name, $value)
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{
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self::set($name, $value);
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if (!self::has('__flash__.__time__')) {
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self::set('__flash__.__time__', $_SERVER['REQUEST_TIME_FLOAT']);
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}
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self::push('__flash__', $name);
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}
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/**
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* 清空当前请求的session数据
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* @return void
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*/
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public static function flush()
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{
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if (self::$init) {
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$item = self::get('__flash__');
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if (!empty($item)) {
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$time = $item['__time__'];
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if ($_SERVER['REQUEST_TIME_FLOAT'] > $time) {
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unset($item['__time__']);
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self::delete($item);
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self::set('__flash__', []);
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}
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}
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}
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}
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/**
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* 删除session数据
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* @param string|array $name session名称
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* @param string|null $prefix 作用域（前缀）
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* @return void
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*/
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public static function delete($name, $prefix = null)
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{
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empty(self::$init) && self::boot();
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$prefix = !is_null($prefix) ? $prefix : self::$prefix;
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if (is_array($name)) {
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foreach ($name as $key) {
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self::delete($key, $prefix);
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}
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} elseif (strpos($name, '.')) {
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list($name1, $name2) = explode('.', $name);
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if ($prefix) {
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unset($_SESSION[$prefix][$name1][$name2]);
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} else {
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unset($_SESSION[$name1][$name2]);
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}
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} else {
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if ($prefix) {
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unset($_SESSION[$prefix][$name]);
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} else {
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unset($_SESSION[$name]);
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}
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}
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}
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/**
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* 清空session数据
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* @param string|null $prefix 作用域（前缀）
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* @return void
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*/
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public static function clear($prefix = null)
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{
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empty(self::$init) && self::boot();
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$prefix = !is_null($prefix) ? $prefix : self::$prefix;
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if ($prefix) {
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unset($_SESSION[$prefix]);
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} else {
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$_SESSION = [];
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}
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}
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/**
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* 判断session数据
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* @param string $name session名称
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* @param string|null $prefix
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* @return bool
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*/
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public static function has($name, $prefix = null)
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{
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empty(self::$init) && self::boot();
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$prefix = !is_null($prefix) ? $prefix : self::$prefix;
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if (strpos($name, '.')) {
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// 支持数组
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list($name1, $name2) = explode('.', $name);
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return $prefix ? isset($_SESSION[$prefix][$name1][$name2]) : isset($_SESSION[$name1][$name2]);
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} else {
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return $prefix ? isset($_SESSION[$prefix][$name]) : isset($_SESSION[$name]);
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}
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}
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/**
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* 添加数据到一个session数组
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* @param string $key
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* @param mixed $value
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* @return void
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*/
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public static function push($key, $value)
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{
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$array = self::get($key);
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if (is_null($array)) {
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$array = [];
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}
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$array[] = $value;
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self::set($key, $array);
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}
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/**
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* 启动session
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* @return void
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*/
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public static function start()
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{
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session_start();
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self::$init = true;
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}
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/**
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* 销毁session
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* @return void
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*/
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public static function destroy()
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{
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if (!empty($_SESSION)) {
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$_SESSION = [];
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}
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session_unset();
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session_destroy();
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self::$init = null;
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}
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/**
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* 重新生成session_id
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* @param bool $delete 是否删除关联会话文件
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* @return void
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*/
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public static function regenerate($delete = false)
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{
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session_regenerate_id($delete);
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}
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/**
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* 暂停session
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* @return void
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*/
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public static function pause()
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{
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// 暂停session
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session_write_close();
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self::$init = false;
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}
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}
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