• 作者:yinheli http://philna.com
• 出处:philna2主题
• 位置:app/debug.php
• 作用:开启自定义DEBUG后,在页脚上集中显示错误提示,而不是在分散在出错位置上直接显示

• 使用方法:在functions.php文件中设置自定义DEBUG选项,define(‘THEME_DEBUG’,true); 或者false.

    <?php
    if(defined('THEME_DEBUG') && constant('THEME_DEBUG')){
    //如果定义了自定义DEBUG,则设置错误处理函数
        set_error_handler('ErrorHandler', E_ALL);
        $GLOBALS['PHPErrorMessage'] = array();
        //设置错误信息数组
    }
    /**
    * @param int $errno contains the level of the error raised, as an integer.
    * @param string $errstr contains the error message, as a string.
    * @param string $errfile which contains the filename that the error was raised in, as a string.
    * @param int $errline contains the line number the error was raised at, as an integer.
    * @param array $errcontext which is an array that points to the active symbol table at the point the error occurred...
    * @return unknown_type
    */
    function ErrorHandler($errno, $errstr, $errfile, $errline, $errcontext){
        static $id = 1;
        if(!is_user_logged_in()){
            return;
        //如果不是管理员登录,则直接返回
        }
        //判断错误级别
        switch($errno){
            case E_WARNING : case E_USER_WARNING :
                $type = 'Warning';
                break;
            case E_NOTICE : case E_USER_NOTICE :
                $type = 'Notice';
                break;
            default :
                $type = 'Error';
                break;
        }
        //填充错误信息数组
        $GLOBALS['PHPErrorMessage'][] = 'ID: '.$id.' '.$type.': '.$errfile.' line: '.$errline.' '.$errstr;
        $id++;
        return;
    }
    //echo E_NOTICE;
    function DisplayPHPErrorMessage(){
        //if(is_bot()) return;
        if(isset($GLOBALS['PHPErrorMessage']) && $GLOBALS['PHPErrorMessage']){
            echo '<div style="margin: 0 auto; width: 898px"><h3>PHP errors on this blog</h3><ul>';
            foreach($GLOBALS['PHPErrorMessage'] as $message){
                echo '<li>', $message, '</li>';
            }
            echo '</ul></div>';
        }
    }
    add_action('wp_footer', 'DisplayPHPErrorMessage', 0);
    ?>