<?php

/**
 * 用户级错误处理类
 */

class error
{
 public $_message = array();
 public $_template = '';
 public $error_no = 0;

 /**
 * 构造函数
 *
 * @access public
 * @param string $tpl
 * @return void
 */
 public function __construct($tpl)
 {
 $this->_template = $tpl;
 }

 /**
 * 添加一条错误信息
 *
 * @access public
 * @param string $msg
 * @param integer $errno
 * @return void
 */
 public function add($msg, $errno=1)
 {
 if (is_array($msg)) {
 $this->_message = array_merge($this->_message, $msg);
 } else {
 $this->_message[] = $msg;
 }

 $this->error_no = $errno;
 }

 /**
 * 清空错误信息
 *
 * @access public
 * @return void
 */
 public function clean()
 {
 $this->_message = array();
 $this->error_no = 0;
 }

 /**
 * 返回所有的错误信息的数组
 *
 * @access public
 * @return array
 */
 public function get_all()
 {
 return $this->_message;
 }

 /**
 * 返回最后一条错误信息
 *
 * @access public
 * @return void
 */
 public function last_message()
 {
 return array_slice($this->_message, -1);
 }

 /**
 * 显示错误信息
 *
 * @access public
 * @param string $link
 * @param string $href
 * @return void
 */
 public function show($link = '', $href = '')
 {
 if ($this->error_no > 0) {
 $message = array();

 $link = (empty($link)) ? L('back_up_page') : $link;
 $href = (empty($href)) ? 'javascript:history.back();' : $href;
 $message['url_info'][$link] = $href;
 $message['back_url'] = $href;

 foreach ($this->_message as $msg) {
 $message['content'] = '<div>' . htmlspecialchars($msg) . '</div>';
 }

 $global = getInstance();
 if (isset($global->tpl)) {
 assign_template();
 $global->tpl->assign('auto_redirect', true);
 $global->tpl->assign('message', $message);
 $global->tpl->display($this->_template);
 } else {
 die($message['content']);
 }

 exit;
 }
 }
}