<?php
function halt($error)
{
    $e = array();
    if (APP_DEBUG) {
        //调试模式下输出错误信息
        if (!is_array($error)) {
            $trace = debug_backtrace();
            $e['message'] = $error;
            $e['file'] = $trace[0]['file'];
            $e['line'] = $trace[0]['line'];
            ob_start();
            debug_print_backtrace();
            $e['trace'] = ob_get_clean();
        } else {
            $e = $error;
        }
    } else {
        //否则定向到错误页面
        $error_page = C('ERROR_PAGE');
        if (!empty($error_page)) {
            redirect($error_page);
        } else {
            if (C('SHOW_ERROR_MSG'))
                $e['message'] = is_array($error) ? $error['message'] : $error;
            else
                $e['message'] = C('ERROR_MESSAGE');
        }
    }
    // 包含异常页面模板
    include C('TMPL_EXCEPTION_FILE');
    exit;
}

/**
 * 自定义异常处理
 * @param string $msg 异常消息
 * @param string $type 异常类型 默认为ThinkException
 * @param integer $code 异常代码 默认为0
 * @return void
 */
function throw_exception($msg, $type = 'ThinkException', $code = 0)
{
    if (class_exists($type, false))
        throw new $type($msg, $code);
    else
        halt($msg);        // 异常类型不存在则输出错误信息字串
}

/**
 * 浏览器友好的变量输出
 * @param mixed $var 变量
 * @param boolean $echo 是否输出 默认为True 如果为false 则返回输出字符串
 * @param string $label 标签 默认为空
 * @param boolean $strict 是否严谨 默认为true
 * @return void|string
 */
function dump($var, $echo = true, $label = null, $strict = true)
{
    $label = ($label === null) ? '' : rtrim($label) . ' ';
    if (!$strict) {
        if (ini_get('html_errors')) {
            $output = print_r($var, true);
            $output = '<pre>' . $label . htmlspecialchars($output, ENT_QUOTES) . '</pre>';
        } else {
            $output = $label . print_r($var, true);
        }
    } else {
        ob_start();
        var_dump($var);
        $output = ob_get_clean();
        if (!extension_loaded('xdebug')) {
            $output = preg_replace('/\]\=\>\n(\s+)/m', '] => ', $output);
            $output = '<pre>' . $label . htmlspecialchars($output, ENT_QUOTES) . '</pre>';
        }
    }
    if ($echo) {
        echo($output);
        return null;
    } else
        return $output;
}

/*array_column*/
if (!function_exists('array_column')) {
    function array_column($input, $columnKey, $indexKey = NULL)
    {
        $columnKeyIsNumber = (is_numeric($columnKey)) ? TRUE : FALSE;
        $indexKeyIsNull = (is_null($indexKey)) ? TRUE : FALSE;
        $indexKeyIsNumber = (is_numeric($indexKey)) ? TRUE : FALSE;
        $result = array();
        foreach ((array)$input AS $key => $row) {
            if ($columnKeyIsNumber) {
                $tmp = array_slice($row, $columnKey, 1);
                $tmp = (is_array($tmp) && !empty($tmp)) ? current($tmp) : NULL;
            } else {
                $tmp = isset($row[$columnKey]) ? $row[$columnKey] : NULL;
            }
            if (!$indexKeyIsNull) {
                if ($indexKeyIsNumber) {
                    $key = array_slice($row, $indexKey, 1);
                    $key = (is_array($key) && !empty($key)) ? current($key) : NULL;
                    $key = is_null($key) ? 0 : $key;
                } else {
                    $key = isset($row[$indexKey]) ? $row[$indexKey] : 0;
                }
            }

            $result[$key] = $tmp;
        }
        return $result;
    }
}
//手机端检测
function check_wap()
{
    if (stristr($_SERVER['HTTP_VIA'], "wap")) {// 先检查是否为wap代理，准确度高
        return true;
    } elseif (strpos(strtoupper($_SERVER['HTTP_ACCEPT']), "VND.WAP.WML") > 0) {// 检查浏览器是否接受 WML.
        return true;
    } elseif (preg_match('/(blackberry|configuration\/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker\/M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i', $_SERVER['HTTP_USER_AGENT'])) {//检查USER_AGENT
        return true;
 }
 elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') !== false ) {
	    return true;
    } else {
        return false;
    }
}

function dami_encrypt($string = '', $skey = 'echounion')
{
    $skey = array_reverse(str_split($skey));
    $strArr = str_split(base64_encode($string));
    $strCount = count($strArr);
    foreach ($skey as $key => $value) {
        $key < $strCount && $strArr[$key] .= $value;
    }
    return str_replace('=', 'O0O0O', join('', $strArr));
}

function dami_decrypt($string = '', $skey = 'echounion')
{
    $skey = array_reverse(str_split($skey));
    $strArr = str_split(str_replace('O0O0O', '=', $string), 2);
    $strCount = count($strArr);
    foreach ($skey as $key => $value) {
        $key < $strCount && $strArr[$key] = $strArr[$key][0];
    }
    return base64_decode(join('', $strArr));
}
//将 xml数据转换为数组格式。
function xml_to_array($xml){
	$reg = "/<(\w+)[^>]*>([\\x00-\\xFF]*)<\\/\\1>/";
	if(preg_match_all($reg, $xml, $matches)){
		$count = count($matches[0]);
		for($i = 0; $i < $count; $i++){
		$subxml= $matches[2][$i];
		$key = $matches[1][$i];
			if(preg_match( $reg, $subxml )){
				$arr[$key] = xml_to_array( $subxml );
			}else{
				$arr[$key] = $subxml;
			}
		}
	}
	return $arr;
}
//[/RUNTIME]
// 循环创建目录
function mk_dir($dir, $mode = 0777)
{
    if (is_dir($dir) || @mkdir($dir, $mode))
        return true;
    if (!mk_dir(dirname($dir), $mode))
        return false;
    return @mkdir($dir, $mode);
}

/*获取远程url内容*/
function get_url_contents($url)
{
    if (function_exists('curl_init')) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_URL, $url);
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    } else {
        if (ini_get("allow_url_fopen") == "1") {
            return file_get_contents($url);
        }
    }
}

//发送邮件
function send_mail($sendto_email, $user_name, $subject, $bodyurl, $port = 25)
{
    vendor('PhpMailer.PhpMailer');
    $mail = new PHPMailer();
    $mail->IsSMTP();// send via SMTP
    $mail->SMTPDebug = 0; // 启用SMTP调试功能
    $mail->Host = C('MAIL_SMTP_SERVER');   // SMTP servers
    $mail->Port = $port;
    $mail->SMTPAuth = true;           // turn on SMTP authentication
    $mail->Username = C('MAIL_FROM');     // SMTP username  注意：普通邮件认证不需要加 @域名
    $mail->Password = dami_decrypt(C('MAIL_PASSSWORD')); // SMTP password
    $mail->From = C('MAIL_FROM');      // 发件人邮箱
    $mail->FromName = C('MAIL_FROM');  // 发件人

    $mail->CharSet = "utf-8";   // 这里指定字符集！
    $mail->Encoding = "base64";
    $mail->AddAddress($sendto_email, $user_name);  // 收件人邮箱和姓名
    //$mail->SetFrom(C('MAIL_FROM'),C('sitetitle'));
    //$mail->AddReplyTo(C('MAIL_FROM'), C('MAIL_FROMNAME'));
    $mail->IsHTML(true);  // send as HTML
    // 邮件主题
    $mail->Subject = $subject;
    // 邮件内容
    $mail->Body = '<html><head><meta http-equiv="Content-Language" content="zh-cn"/><meta http-equiv="Content-Type" content="text/html;charset=utf-8"/></head><body><div style="width:80%;padding:30px 20px;margin:0 auto;"><span style="font-weight:bold;font-size:16px;">尊敬的' . $user_name . '</span><br/><br/>' . $bodyurl . '<br/></div></body></html>';
    $mail->AltBody = "text/html";
    if (!$mail->Send()) {
        return false;
    } else {
        return true;
    }
}

//防止sql注入
function inject_check($str)
{
    $tmp = preg_match('/select|insert(\s|"|\'|`)+|update(\s|"|\'|`)+|and(\s|"|\'|`)+|or(\s|"|\'|`)+|delete|\'|\/\*|\*|\.\.\/|\.\/|union|into(\s|"|\'|`)+|load_file|outfile/is', $str);
    if ($tmp) {
        alert("非法操作!", 1);
    } else {
        return $str;
    }
}

/**
 * +----------------------------------------------------------
 *javascript 弹窗信息
 * Action示例:alert('操作失败!',1);
 * +----------------------------------------------------------
 * @access null
 * +----------------------------------------------------------
 * @param string $msg 弹窗信息
 * @param int $url 跳转url
 * +----------------------------------------------------------
 **/
function alert($msg, $url)
{
    header('Content-type: text/html; charset=utf-8');
    $str = "<script language=\"javascript\">";
    $str .= "alert('{$msg}');";
    switch ($url) {
        case 1:
            $s = "window.history.go(-1);";
            break;
        case 2:
            $s = "window.history.go(-2);";
            break;
        case 3:
            $s = "self.close();";
            break;
        default:
            $s = "location.href='{$url}';";
    }
    $str .= $s;
    $str .= "</script>";
    exit($str);
}

//防止xss
function remove_xss($val)
{
    vendor('Xsshtml.xsshtml');
    $xss = new XssHtml($val);
    $html = $xss->getHtml();
    return $html;
}

/**
 * 404处理
 * 调试模式会抛异常
 * 部署模式下面传入url参数可以指定跳转页面，否则发送404信息
 * @param string $msg 提示信息
 * @param string $url 跳转URL地址
 * @return void
 */
function _404($msg = '', $url = '')
{
    APP_DEBUG && throw_exception($msg);
    if ($msg && C('LOG_EXCEPTION_RECORD')) Log::write($msg);
    if (empty($url) && C('URL_404_REDIRECT')) {
        $url = C('URL_404_REDIRECT');
    }
    if ($url) {
        redirect($url);
    } else {
        send_http_status(404);
        exit;
    }
}

/**
 * 设置当前页面的布局
 * @param string|false $layout 布局名称 为false的时候表示关闭布局
 * @return void
 */
function layout($layout)
{
    if (false !== $layout) {
        // 开启布局
        C('LAYOUT_ON', true);
        if (is_string($layout)) { // 设置新的布局模板
            C('LAYOUT_NAME', $layout);
        }
    } else {// 临时关闭布局
        C('LAYOUT_ON', false);
    }
}

/**
 * URL组装 支持不同URL模式
 * @param string $url URL表达式，格式：'[分组/模块/操作#锚点@域名]?参数1=值1&参数2=值2...'
 * @param string|array $vars 传入的参数，支持数组和字符串
 * @param string $suffix 伪静态后缀，默认为true表示获取配置值
 * @param boolean $redirect 是否跳转，如果设置为true则表示跳转到该URL地址
 * @param boolean $domain 是否显示域名
 * @return string
 */
function U($url = '', $vars = '', $suffix = true, $redirect = false, $domain = false)
{
    // 解析URL
    $info = parse_url($url);
    $url = !empty($info['path']) ? $info['path'] : ACTION_NAME;
    if (isset($info['fragment'])) { // 解析锚点
        $anchor = $info['fragment'];
        if (false !== strpos($anchor, '?')) { // 解析参数
            list($anchor, $info['query']) = explode('?', $anchor, 2);
        }
        if (false !== strpos($anchor, '@')) { // 解析域名
            list($anchor, $host) = explode('@', $anchor, 2);
        }
    } elseif (false !== strpos($url, '@')) { // 解析域名
        list($url, $host) = explode('@', $info['path'], 2);
    }
    // 解析子域名
    if (isset($host)) {
        $domain = $host . (strpos($host, '.') ? '' : strstr($_SERVER['HTTP_HOST'], '.'));
    } elseif ($domain === true) {
        $domain = $_SERVER['HTTP_HOST'];
        if (C('APP_SUB_DOMAIN_DEPLOY')) { // 开启子域名部署
            $domain = $domain == 'localhost' ? 'localhost' : 'www' . strstr($_SERVER['HTTP_HOST'], '.');
            // '子域名'=>array('项目[/分组]');
            foreach (C('APP_SUB_DOMAIN_RULES') as $key => $rule) {
                if (false === strpos($key, '*') && 0 === strpos($url, $rule[0])) {
                    $domain = $key . strstr($domain, '.'); // 生成对应子域名
                    $url = substr_replace($url, '', 0, strlen($rule[0]));
                    break;
                }
            }
        }
    }

    // 解析参数
    if (is_string($vars)) { // aaa=1&bbb=2 转换成数组
        parse_str($vars, $vars);
    } elseif (!is_array($vars)) {
        $vars = array();
    }
    if (isset($info['query'])) { // 解析地址里面参数 合并到vars
        parse_str($info['query'], $params);
        $vars = array_merge($params, $vars);
    }

    // URL组装
    $depr = C('URL_PATHINFO_DEPR');
    if ($url) {
        if (0 === strpos($url, '/')) {// 定义路由
            $route = true;
            $url = substr($url, 1);
            if ('/' != $depr) {
                $url = str_replace('/', $depr, $url);
            }
        } else {
            if ('/' != $depr) { // 安全替换
                $url = str_replace('/', $depr, $url);
            }
            // 解析分组、模块和操作
            $url = trim($url, $depr);
            $path = explode($depr, $url);
            $var = array();
            $var[C('VAR_ACTION')] = !empty($path) ? array_pop($path) : ACTION_NAME;
            $var[C('VAR_MODULE')] = !empty($path) ? array_pop($path) : MODULE_NAME;
            if ($maps = C('URL_ACTION_MAP')) {
                if (isset($maps[strtolower($var[C('VAR_MODULE')])])) {
                    $maps = $maps[strtolower($var[C('VAR_MODULE')])];
                    if ($action = array_search(strtolower($var[C('VAR_ACTION')]), $maps)) {
                        $var[C('VAR_ACTION')] = $action;
                    }
                }
            }
            if ($maps = C('URL_MODULE_MAP')) {
                if ($module = array_search(strtolower($var[C('VAR_MODULE')]), $maps)) {
                    $var[C('VAR_MODULE')] = $module;
                }
            }
            if (C('URL_CASE_INSENSITIVE')) {
                $var[C('VAR_MODULE')] = parse_name($var[C('VAR_MODULE')]);
            }
            if (!C('APP_SUB_DOMAIN_DEPLOY') && C('APP_GROUP_LIST')) {
                if (!empty($path)) {
                    $group = array_pop($path);
                    $var[C('VAR_GROUP')] = $group;
                } else {
                    if (GROUP_NAME != C('DEFAULT_GROUP')) {
                        $var[C('VAR_GROUP')] = GROUP_NAME;
                    }
                }
                if (C('URL_CASE_INSENSITIVE') && isset($var[C('VAR_GROUP')])) {
                    $var[C('VAR_GROUP')] = strtolower($var[C('VAR_GROUP')]);
                }
            }
        }
    }

    if (C('URL_MODEL') == 0) { // 普通模式URL转换
        $url = __APP__ . '?' . http_build_query(array_reverse($var));
        if (!empty($vars)) {
            $vars = urldecode(http_build_query($vars));
            $url .= '&' . $vars;
        }
    } else { // PATHINFO模式或者兼容URL模式
        if (isset($route)) {
            $url = __APP__ . '/' . rtrim($url, $depr);
        } else {
            $url = __APP__ . '/' . implode($depr, array_reverse($var));
        }
        if (!empty($vars)) { // 添加参数
            foreach ($vars as $var => $val) {
                if ('' !== trim($val)) $url .= $depr . $var . $depr . urlencode($val);
            }
        }
        if ($suffix) {
            $suffix = $suffix === true ? C('URL_HTML_SUFFIX') : $suffix;
            if ($pos = strpos($suffix, '|')) {
                $suffix = substr($suffix, 0, $pos);
            }
            if ($suffix && '/' != substr($url, -1)) {
                $url .= '.' . ltrim($suffix, '.');
            }
        }
    }
    if (isset($anchor)) {
        $url .= '#' . $anchor;
    }
    if ($domain) {
        $url = (is_ssl() ? 'https://' : 'http://') . $domain . $url;
    }
    if ($redirect) // 直接跳转URL
        redirect($url);
    else
        return $url;
}

/**
 * 渲染输出Widget
 * @param string $name Widget名称
 * @param array $data 传入的参数
 * @param boolean $return 是否返回内容
 * @param string $path Widget所在路径
 * @return void
 */
function W($name, $data = array(), $return = false, $path = '')
{
    $class = $name . 'Widget';
    $path = empty($path) ? BASE_LIB_PATH : $path;
    require_cache($path . 'Widget/' . $class . '.class.php');
    if (!class_exists($class))
        throw_exception(L('_CLASS_NOT_EXIST_') . ':' . $class);
    $widget = Think::instance($class);
    $content = $widget->render($data);
    if ($return)
        return $content;
    else
        echo $content;
}

/**
 * 过滤器方法 引用传值
 * @param string $name 过滤器名称
 * @param string $content 要过滤的内容
 * @return void
 */
function filter($name, &$content)
{
    $class = $name . 'Filter';
    require_cache(BASE_LIB_PATH . 'Filter/' . $class . '.class.php');
    $filter = new $class();
    $content = $filter->run($content);
}

/**
 * 判断是否SSL协议
 * @return boolean
 */
function is_ssl()
{
    if (isset($_SERVER['HTTPS']) && ('1' == $_SERVER['HTTPS'] || 'on' == strtolower($_SERVER['HTTPS']))) {
        return true;
    } elseif (isset($_SERVER['SERVER_PORT']) && ('443' == $_SERVER['SERVER_PORT'])) {
        return true;
    }
    return false;
}

/**
 * URL重定向
 * @param string $url 重定向的URL地址
 * @param integer $time 重定向的等待时间（秒）
 * @param string $msg 重定向前的提示信息
 * @return void
 */
function redirect($url, $time = 0, $msg = '')
{
    //多行URL地址支持
    $url = str_replace(array("\n", "\r"), '', $url);
    if (empty($msg))
        $msg = "系统将在{$time}秒之后自动跳转到{$url}！";
    if (!headers_sent()) {
        // redirect
        if (0 === $time) {
            header('Location: ' . $url);
        } else {
            header("refresh:{$time};url={$url}");
            echo($msg);
        }
        exit();
    } else {
        $str = "<meta http-equiv='Refresh' content='{$time};URL={$url}'>";
        if ($time != 0)
            $str .= $msg;
        exit($str);
    }
}

/**
 * 缓存管理
 * @param mixed $name 缓存名称，如果为数组表示进行缓存设置
 * @param mixed $value 缓存值
 * @param mixed $options 缓存参数
 * @return mixed
 */
function S($name, $value = '', $options = null)
{
    static $cache = '';
    if (is_array($options) && empty($cache)) {
        // 缓存操作的同时初始化
        $type = isset($options['type']) ? $options['type'] : '';
        $cache = Cache::getInstance($type, $options);
    } elseif (is_array($name)) { // 缓存初始化
        $type = isset($name['type']) ? $name['type'] : '';
        $cache = Cache::getInstance($type, $name);
        return $cache;
    } elseif (empty($cache)) { // 自动初始化
        $cache = Cache::getInstance();
    }
    if ('' === $value) { // 获取缓存
        return $cache->get($name);
    } elseif (is_null($value)) { // 删除缓存
        return $cache->rm($name);
    } else { // 缓存数据
        if (is_array($options)) {
            $expire = isset($options['expire']) ? $options['expire'] : NULL;
        } else {
            $expire = is_numeric($options) ? $options : NULL;
        }
        return $cache->set($name, $value, $expire);
    }
}

// S方法的别名 已经废除 不再建议使用
function cache($name, $value = '', $options = null)
{
    return S($name, $value, $options);
}

/**
 * 快速文件数据读取和保存 针对简单类型数据 字符串、数组
 * @param string $name 缓存名称
 * @param mixed $value 缓存值
 * @param string $path 缓存路径
 * @return mixed
 */
function F($name, $value = '', $path = DATA_PATH)
{
    static $_cache = array();
    $filename = $path . $name . '.php';
    if ('' !== $value) {
        if (is_null($value)) {
            // 删除缓存
            return false !== strpos($name, '*') ? array_map("unlink", glob($filename)) : unlink($filename);
        } else {
            // 缓存数据
            $dir = dirname($filename);
            // 目录不存在则创建
            if (!is_dir($dir))
                mkdir($dir, 0755, true);
            $_cache[$name] = $value;
            return file_put_contents($filename, strip_whitespace("<?php\treturn " . var_export($value, true) . ";?>"));
        }
    }
    if (isset($_cache[$name]))
        return $_cache[$name];
    // 获取缓存数据
    if (is_file($filename)) {
        $value = include $filename;
        $_cache[$name] = $value;
    } else {
        $value = false;
    }
    return $value;
}

/**
 * 取得对象实例 支持调用类的静态方法
 * @param string $name 类名
 * @param string $method 方法名，如果为空则返回实例化对象
 * @param array $args 调用参数
 * @return object
 */
function get_instance_of($name, $method = '', $args = array())
{
    static $_instance = array();
    $identify = empty($args) ? $name . $method : $name . $method . to_guid_string($args);
    if (!isset($_instance[$identify])) {
        if (class_exists($name)) {
            $o = new $name();
            if (method_exists($o, $method)) {
                if (!empty($args)) {
                    $_instance[$identify] = call_user_func_array(array(&$o, $method), $args);
                } else {
                    $_instance[$identify] = $o->$method();
                }
            } else
                $_instance[$identify] = $o;
        } else
            halt(L('_CLASS_NOT_EXIST_') . ':' . $name);
    }
    return $_instance[$identify];
}

/**
 * 根据PHP各种类型变量生成唯一标识号
 * @param mixed $mix 变量
 * @return string
 */
function to_guid_string($mix)
{
    if (is_object($mix) && function_exists('spl_object_hash')) {
        return spl_object_hash($mix);
    } elseif (is_resource($mix)) {
        $mix = get_resource_type($mix) . strval($mix);
    } else {
        $mix = serialize($mix);
    }
    return md5($mix);
}

/**
 * XML编码
 * @param mixed $data 数据
 * @param string $root 根节点名
 * @param string $item 数字索引的子节点名
 * @param string $attr 根节点属性
 * @param string $id 数字索引子节点key转换的属性名
 * @param string $encoding 数据编码
 * @return string
 */
function xml_encode($data, $root = 'think', $item = 'item', $attr = '', $id = 'id', $encoding = 'utf-8')
{
    if (is_array($attr)) {
        $_attr = array();
        foreach ($attr as $key => $value) {
            $_attr[] = "{$key}=\"{$value}\"";
        }
        $attr = implode(' ', $_attr);
    }
    $attr = trim($attr);
    $attr = empty($attr) ? '' : " {$attr}";
    $xml = "<?xml version=\"1.0\" encoding=\"{$encoding}\"?>";
    $xml .= "<{$root}{$attr}>";
    $xml .= data_to_xml($data, $item, $id);
    $xml .= "</{$root}>";
    return $xml;
}

/**
 * 数据XML编码
 * @param mixed $data 数据
 * @param string $item 数字索引时的节点名称
 * @param string $id 数字索引key转换为的属性名
 * @return string
 */
function data_to_xml($data, $item = 'item', $id = 'id')
{
    $xml = $attr = '';
    foreach ($data as $key => $val) {
        if (is_numeric($key)) {
            $id && $attr = " {$id}=\"{$key}\"";
            $key = $item;
        }
        $xml .= "<{$key}{$attr}>";
        $xml .= (is_array($val) || is_object($val)) ? data_to_xml($val, $item, $id) : $val;
        $xml .= "</{$key}>";
    }
    return $xml;
}

/**
 * session管理函数
 * @param string|array $name session名称 如果为数组则表示进行session设置
 * @param mixed $value session值
 * @return mixed
 */
function session($name, $value = '')
{
    $prefix = C('SESSION_PREFIX');
    if (is_array($name)) { // session初始化 在session_start 之前调用
        if (isset($name['prefix'])) C('SESSION_PREFIX', $name['prefix']);
        if (C('VAR_SESSION_ID') && isset($_REQUEST[C('VAR_SESSION_ID')])) {
            session_id($_REQUEST[C('VAR_SESSION_ID')]);
        } elseif (isset($name['id'])) {
            session_id($name['id']);
        }
        ini_set('session.auto_start', 0);
        if (isset($name['name'])) session_name($name['name']);
        if (isset($name['path'])) session_save_path($name['path']);
        if (isset($name['domain'])) ini_set('session.cookie_domain', $name['domain']);
        if (isset($name['expire'])) ini_set('session.gc_maxlifetime', $name['expire']);
        if (isset($name['use_trans_sid'])) ini_set('session.use_trans_sid', $name['use_trans_sid'] ? 1 : 0);
        if (isset($name['use_cookies'])) ini_set('session.use_cookies', $name['use_cookies'] ? 1 : 0);
        if (isset($name['cache_limiter'])) session_cache_limiter($name['cache_limiter']);
        if (isset($name['cache_expire'])) session_cache_expire($name['cache_expire']);
        if (isset($name['type'])) C('SESSION_TYPE', $name['type']);
        if (C('SESSION_TYPE')) { // 读取session驱动
            $class = 'Session' . ucwords(strtolower(C('SESSION_TYPE')));
            // 检查驱动类
            if (require_cache(EXTEND_PATH . 'Driver/Session/' . $class . '.class.php')) {
                $hander = new $class();
                $hander->execute();
            } else {
                // 类没有定义
                throw_exception(L('_CLASS_NOT_EXIST_') . ': ' . $class);
            }
        }
        // 启动session
        if (C('SESSION_AUTO_START')) session_start();
    } elseif ('' === $value) {
        if (0 === strpos($name, '[')) { // session 操作
            if ('[pause]' == $name) { // 暂停session
                session_write_close();
            } elseif ('[start]' == $name) { // 启动session
                session_start();
            } elseif ('[destroy]' == $name) { // 销毁session
                $_SESSION = array();
                session_unset();
                session_destroy();
            } elseif ('[regenerate]' == $name) { // 重新生成id
                session_regenerate_id();
            }
        } elseif (0 === strpos($name, '?')) { // 检查session
            $name = substr($name, 1);
            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]);
            }
        } elseif (is_null($name)) { // 清空session
            if ($prefix) {
                unset($_SESSION[$prefix]);
            } else {
                $_SESSION = array();
            }
        } elseif ($prefix) { // 获取session
            if (strpos($name, '.')) {
                list($name1, $name2) = explode('.', $name);
                return isset($_SESSION[$prefix][$name1][$name2]) ? $_SESSION[$prefix][$name1][$name2] : null;
            } else {
                return isset($_SESSION[$prefix][$name]) ? $_SESSION[$prefix][$name] : null;
            }
        } else {
            if (strpos($name, '.')) {
                list($name1, $name2) = explode('.', $name);
                return isset($_SESSION[$name1][$name2]) ? $_SESSION[$name1][$name2] : null;
            } else {
                return isset($_SESSION[$name]) ? $_SESSION[$name] : null;
            }
        }
    } elseif (is_null($value)) { // 删除session
        if ($prefix) {
            unset($_SESSION[$prefix][$name]);
        } else {
            unset($_SESSION[$name]);
        }
    } else { // 设置session
        if ($prefix) {
            if (!is_array($_SESSION[$prefix])) {
                $_SESSION[$prefix] = array();
            }
            $_SESSION[$prefix][$name] = $value;
        } else {
            $_SESSION[$name] = $value;
        }
    }
}

/**
 * Cookie 设置、获取、删除
 * @param string $name cookie名称
 * @param mixed $value cookie值
 * @param mixed $options cookie参数
 * @return mixed
 */
function cookie($name, $value = '', $option = null)
{
    // 默认设置
    $config = array(
        'prefix' => C('COOKIE_PREFIX'), // cookie 名称前缀
        'expire' => C('COOKIE_EXPIRE'), // cookie 保存时间
        'path' => C('COOKIE_PATH'), // cookie 保存路径
        'domain' => C('COOKIE_DOMAIN'), // cookie 有效域名
    );
    // 参数设置(会覆盖黙认设置)
    if (!is_null($option)) {
        if (is_numeric($option))
            $option = array('expire' => $option);
        elseif (is_string($option))
            parse_str($option, $option);
        $config = array_merge($config, array_change_key_case($option));
    }
    // 清除指定前缀的所有cookie
    if (is_null($name)) {
        if (empty($_COOKIE))
            return;
        // 要删除的cookie前缀，不指定则删除config设置的指定前缀
        $prefix = empty($value) ? $config['prefix'] : $value;
        if (!empty($prefix)) {// 如果前缀为空字符串将不作处理直接返回
            foreach ($_COOKIE as $key => $val) {
                if (0 === stripos($key, $prefix)) {
                    setcookie($key, '', time() - 3600, $config['path'], $config['domain']);
                    unset($_COOKIE[$key]);
                }
            }
        }
        return;
    }
    $name = $config['prefix'] . $name;
    if ('' === $value) {
        if (isset($_COOKIE[$name])) {
            $value = $_COOKIE[$name];
            if (0 === strpos($value, 'think:')) {
                $value = substr($value, 6);
                return array_map('urldecode', json_decode(MAGIC_QUOTES_GPC ? stripslashes($value) : $value, true));
            } else {
                return $value;
            }
        } else {
            return null;
        }
    } else {
        if (is_null($value)) {
            setcookie($name, '', time() - 3600, $config['path'], $config['domain']);
            unset($_COOKIE[$name]); // 删除指定cookie
        } else {
            // 设置cookie
            if (is_array($value)) {
                $value = 'think:' . json_encode(array_map('urlencode', $value));
            }
            $expire = !empty($config['expire']) ? time() + intval($config['expire']) : 0;
            setcookie($name, $value, $expire, $config['path'], $config['domain']);
            $_COOKIE[$name] = $value;
        }
    }
}

/**
 * 加载动态扩展文件
 * @return void
 */
function load_ext_file()
{
    // 加载自定义外部文件
    if (C('LOAD_EXT_FILE')) {
        $files = explode(',', C('LOAD_EXT_FILE'));
        foreach ($files as $file) {
            $file = COMMON_PATH . $file . '.php';
            if (is_file($file)) include $file;
        }
    }
    // 加载自定义的动态配置文件
    if (C('LOAD_EXT_CONFIG')) {
        $configs = C('LOAD_EXT_CONFIG');
        if (is_string($configs)) $configs = explode(',', $configs);
        foreach ($configs as $key => $config) {
            $file = CONF_PATH . $config . '.php';
            if (is_file($file)) {
                is_numeric($key) ? C(include $file) : C($key, include $file);
            }
        }
    }
}

/**
 * 获取客户端IP地址
 * @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
 * @return mixed
 */
function get_client_ip($type = 0)
{
    $type = $type ? 1 : 0;
    static $ip = NULL;
    if ($ip !== NULL) return $ip[$type];
    if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
        $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
        $pos = array_search('unknown', $arr);
        if (false !== $pos) unset($arr[$pos]);
        $ip = trim($arr[0]);
    } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
        $ip = $_SERVER['HTTP_CLIENT_IP'];
    } elseif (isset($_SERVER['REMOTE_ADDR'])) {
        $ip = $_SERVER['REMOTE_ADDR'];
    }
    // IP地址合法验证
    $long = sprintf("%u", ip2long($ip));
    $ip = $long ? array($ip, $long) : array('0.0.0.0', 0);
    return $ip[$type];
}

/**
 * 发送HTTP状态
 * @param integer $code 状态码
 * @return void
 */
function send_http_status($code)
{
    static $_status = array(
        // Informational 1xx
        100 => 'Continue',
        101 => 'Switching Protocols',
        // Success 2xx
        200 => 'OK',
        201 => 'Created',
        202 => 'Accepted',
        203 => 'Non-Authoritative Information',
        204 => 'No Content',
        205 => 'Reset Content',
        206 => 'Partial Content',
        // Redirection 3xx
        300 => 'Multiple Choices',
        301 => 'Moved Permanently',
        302 => 'Moved Temporarily ', // 1.1
        303 => 'See Other',
        304 => 'Not Modified',
        305 => 'Use Proxy',
        // 306 is deprecated but reserved
        307 => 'Temporary Redirect',
        // Client Error 4xx
        400 => 'Bad Request',
        401 => 'Unauthorized',
        402 => 'Payment Required',
        403 => 'Forbidden',
        404 => 'Not Found',
        405 => 'Method Not Allowed',
        406 => 'Not Acceptable',
        407 => 'Proxy Authentication Required',
        408 => 'Request Timeout',
        409 => 'Conflict',
        410 => 'Gone',
        411 => 'Length Required',
        412 => 'Precondition Failed',
        413 => 'Request Entity Too Large',
        414 => 'Request-URI Too Long',
        415 => 'Unsupported Media Type',
        416 => 'Requested Range Not Satisfiable',
        417 => 'Expectation Failed',
        // Server Error 5xx
        500 => 'Internal Server Error',
        501 => 'Not Implemented',
        502 => 'Bad Gateway',
        503 => 'Service Unavailable',
        504 => 'Gateway Timeout',
        505 => 'HTTP Version Not Supported',
        509 => 'Bandwidth Limit Exceeded'
    );
    if (isset($_status[$code])) {
        header('HTTP/1.1 ' . $code . ' ' . $_status[$code]);
        // 确保FastCGI模式下正常
        header('Status:' . $code . ' ' . $_status[$code]);
    }
}

// 过滤表单中的表达式
function think_filter(&$value)
{
// 过滤查询特殊字符
    if (preg_match('/^(EXP|NEQ|GT|EGT|LT|ELT|OR|LIKE|NOTLIKE|NOTBETWEEN|NOT BETWEEN|BETWEEN|NOTIN|NOT IN|IN)$/i', $value)) {
        $value .= ' ';
    }
}

/**
 * 字符串截取，支持中文和其他编码
 * @static
 * @access public
 * @param string $str 需要转换的字符串
 * @param string $start 开始位置
 * @param string $length 截取长度
 * @param string $charset 编码格式
 * @param string $suffix 截断显示字符
 * @return string
 */
function msubstr($str, $start = 0, $length, $charset = "utf-8", $suffix = false)
{
    if (function_exists("mb_substr"))
        $slice = mb_substr($str, $start, $length, $charset);
    elseif (function_exists('iconv_substr')) {
        $slice = iconv_substr($str, $start, $length, $charset);
        if (false === $slice) {
            $slice = '';
        }
    } else {
        $re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
        $re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
        $re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
        $re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
        preg_match_all($re[$charset], $str, $match);
        $slice = join("", array_slice($match[0], $start, $length));
    }
    return $suffix ? $slice . '...' : $slice;
}

//html无损裁剪
function htmlsubstr($str, $num, $more = false)
{
    $leng = strlen($str);
    if ($num >= $leng)
        return $str;
    $word = 0;
    $i = 0;
    /** 字符串指针 **/
    $stag = array(array());
    /** 存放开始HTML的标志 **/
    $etag = array(array());
    /** 存放结束HTML的标志 **/
    $sp = 0;
    $ep = 0;
    while ($word != $num) {
        if (ord($str[$i]) > 128) {
            //$re.=substr($str,$i,3);
            $i += 3;
            $word++;
        } else if ($str[$i] == '<') {
            if ($str[$i + 1] == '!') {
                $i++;
                continue;
            }

            if ($str[$i + 1] == '/') {
                $ptag =& $etag;
                $k =& $ep;
                $i += 2;
            } else {
                $ptag =& $stag;
                $i += 1;
                $k =& $sp;
            }
            for (; $i < $leng; $i++) {
                if ($str[$i] == ' ') {
                    $ptag[$k] = implode('', $ptag[$k]);
                    $k++;
                    break;
                }
                if ($str[$i] != '>') {
                    $ptag[$k][] = $str[$i];
                    continue;
                } else {
                    $ptag[$k] = implode('', $ptag[$k]);
                    $k++;
                    break;
                }
            }
            $i++;
            continue;
        } else {
            //$re.=substr($str,$i,1);
            $word++;
            $i++;
        }
    }
    foreach ($etag as $val) {
        $key1 = array_search($val, $stag);
        if ($key1 !== false) unset($stag[$key]);
    }
    foreach ($stag as $key => $val) {
        if (in_array($val, array('br', 'img'))) unset($stag[$key1]);
    }
    array_reverse($stag);
    $ends = '</' . implode('></', $stag) . '>';
    $re = substr($str, 0, $i) . $ends;
    if ($more) $re .= '...';
    return $re;
}

// 自动转换字符集 支持数组转换
function auto_charset($fContents, $from = 'gbk', $to = 'utf-8')
{
    $from = strtoupper($from) == 'UTF8' ? 'utf-8' : $from;
    $to = strtoupper($to) == 'UTF8' ? 'utf-8' : $to;
    if (strtoupper($from) === strtoupper($to) || empty($fContents) || (is_scalar($fContents) && !is_string($fContents))) {
        //如果编码相同或者非字符串标量则不转换
        return $fContents;
    }
    if (is_string($fContents)) {
        if (function_exists('mb_convert_encoding')) {
            return mb_convert_encoding($fContents, $to, $from);
        } elseif (function_exists('iconv')) {
            return iconv($from, $to, $fContents);
        } else {
            return $fContents;
        }
    } elseif (is_array($fContents)) {
        foreach ($fContents as $key => $val) {
            $_key = auto_charset($key, $from, $to);
            $fContents[$_key] = auto_charset($val, $from, $to);
            if ($key != $_key)
                unset($fContents[$key]);
        }
        return $fContents;
    } else {
        return $fContents;
    }
}

//对数组递归函数处理
function arrayRecursive(&$array, $function, $apply_to_keys_also = false)
{
    static $recursive_counter = 0;
    if (++$recursive_counter > 2000) {
        die('possible deep recursion attack');
    }
    foreach ($array as $key => $value) {
        if (is_array($value)) {
            arrayRecursive($array[$key], $function, $apply_to_keys_also);
        } else {
            $array[$key] = $function($value);
        }
        if ($apply_to_keys_also && is_string($key)) {
            $new_key = $function($key);
            if ($new_key != $key) {
                $array[$new_key] = $array[$key];
                unset($array[$key]);
            }
        }
    }
    $recursive_counter--;
}