Typecho如何开启错误输出？

Question

PHP纯菜写了插件，但是无法启用，想看看那有问题。代码如下
由于纯菜，代码取材自多个模块。

<?php
/**
 * GitHub Widget,<strong>&lt;repo&gt;typecho/typecho&lt;/repo&gt;</strong>
 *
 * @package Reposidget：GitHub 项目挂件
 * @author xiqingongzi
 * @version 1.0.0
 * @link http://www.ixiqin.com
 */

class Reposidget_Plugin implements Typecho_Plugin_Interface
{
    /**
     * 激活插件方法,如果激活失败,直接抛出异常
     *
     * @access public
     * @return void
     * @throws Typecho_Plugin_Exception
     */
    public static function activate()
    {
        Typecho_Plugin::factory('Widget_Abstract_Contents')->contentEx = array('Reposidget_Plugin', 'parse');

        Typecho_Plugin::factory('Widget_Archive')->header = array('Reposidget_Plugin', 'header');
        Typecho_Plugin::factory('Widget_Archive')->footer = array('Reposidget_Plugin', 'footer');
    }

    /**
     * 禁用插件方法,如果禁用失败,直接抛出异常
     *
     * @static
     * @access public
     * @return void
     * @throws Typecho_Plugin_Exception
     */
    public static function deactivate(){}

    /**
     * 获取插件配置面板
     *
     * @access public
     * @param Typecho_Widget_Helper_Form $form 配置面板
     * @return void
     */
    public static function config(Typecho_Widget_Helper_Form $form){}

    /**
     * 个人用户的配置面板
     *
     * @access public
     * @param Typecho_Widget_Helper_Form $form
     * @return void
     */
    public static function personalConfig(Typecho_Widget_Helper_Form $form){}

    /**
     * 输出头部css
     *
     * @access public
     * @param unknown $header
     * @return unknown
     */
    public static function header() {
        $cssUrl = Helper::options()->pluginUrl . '/Reposidget/src/reposidget.css';
        echo '<link rel="stylesheet" type="text/css" href="' . $cssUrl . '" />';
    }

    /**
     * 输出尾部js
     *
     * @access public
     * @param unknown $header
     * @return unknown
     */
    public static function footer() {
        $jsUrl = Helper::options()->pluginUrl . '/Reposidget/src/reposidget.js';
        echo '<script type="text/javascript" src="'. $jsUrl .'"></script>';

   }

/**
     * 插件实现方法
     *
     * @access public
     * @return void
     */
    public static function parse($text, $widget, $lastResult)
    {
                $text = empty($lastResult) ? $text : $lastResult;

        if ($widget instanceof Widget_Archive) {

            $text = preg_replace("/<(repo)>(.*?)<\/\\1>/is",
            "<a class=\"reposidget\" href=\"\\2\ \">\\2\</a>",
            $text);
        }

        return $text;
    }
}

Answer 1

在config.inc.php里加入

define('__TYPECHO_DEBUG__', true);