背景ci3.0框架核心代码自动实现了异常,并实现了抛出的对应页面和方法,对于一些个性化需求特别是接口类型的应用,会不合适。因此需要在不改版核心代码 (system目录下文件),来改变对异常及404等相关异常的处理。方法说明ci框架3.0比2.0有比较大的改动,其中之一就是对异常的处理。以下是CodeIgniter-3.1.8\system\core\CodeIgniter.php 中对异常处理的部分代码/* * —————————————————— * Define a custom error handler so we can log PHP errors * —————————————————— / set_error_handler(’_error_handler’); set_exception_handler(’_exception_handler’); register_shutdown_function(’_shutdown_handler’);…以上括号内的方法均在common.php中以function_exists为前提声明。…if ( ! function_exists(’_exception_handler’)){…代码实现我们简单粗暴的在项目入口文件index.php中重写以下方法/* * 推送到redis 异常队列 * @time 2019/3/21 15:29 * @author * @param $msg * @return bool|int|string /function redis_list_add($msg){ ini_set(‘default_socket_timeout’, -1); $v = explode(’:’, $_SERVER[‘SITE_REDIS_SERVER’]); if (is_array($v) && !empty($v)) { try { $redis = new redis(); $redis->pconnect($v[0], $v[1]); $trace = $_SERVER[‘SERVER_NAME’] . " exception\n"; $trace .= “clint ip is {$_SERVER[‘REMOTE_ADDR’]} " . “,server is " . $_SERVER[‘SERVER_NAME’] . “(” . $_SERVER[‘SERVER_ADDR’] . “)”."\n”; $trace.= “path is “.(isset($_SERVER[‘REQUEST_URI’])?$_SERVER[‘REQUEST_URI’]:“empty”)."\n”; $trace .= “request params is =” . print_r($_POST, true); return $redis->LPUSH(‘CC_PHP_ERROR_WARNING’, $trace . $msg); } catch (Exception $e) { return $e->getMessage(); } }}/* * 优先重写common.php中对应方法 * @time 2019/3/21 16:19 * @author * @param $severity * @param $message * @param $filepath * @param $line /function _error_handler($severity, $message, $filepath, $line){ $is_error = (((E_ERROR | E_PARSE | E_COMPILE_ERROR | E_CORE_ERROR | E_USER_ERROR | E_STRICT) & $severity) === $severity); if ($is_error) { $error_msg = ($message . “\n” . $filepath . “\n” . $line); redis_list_add($error_msg); exit(json_encode([‘success’ => ‘-1’, ‘code’ => 501, ‘msg’ => ’error’])); }}/* * 捕获php本身语法,对象调用,参数类型传递等错误 * 优先重写common.php中对应方法 * ParseError,object(Error),TypeError,Error * @time 2019/3/20 18:33 * @author * @param $exception /function _exception_handler($exception){ $_tmp =& load_class(‘Exceptions’, ‘core’); if (!empty($exception)) { $error_msg = ($exception->getMessage() . “\n” . $exception->getTraceAsString()); redis_list_add($error_msg); exit(json_encode([‘success’ => ‘-1’, ‘code’ => 501, ‘msg’ => ’exception’])); }}/* * 优先重写common.php中对应方法 * require_once(’no_exists.php’) * @time 2019/3/21 9:49 * @author /function _shutdown_handler(){ $last_error = error_get_last(); if (isset($last_error) && ($last_error[’type’] & (E_ERROR | E_PARSE | E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_COMPILE_WARNING))) { redis_list_add($msg = $last_error[‘message’] . “\n” . $last_error[‘file’] . “\n” . $last_error[’line’] . “\n”); exit(json_encode([‘success’ => ‘-1’, ‘code’ => 501, ‘msg’ => ‘shutdown’])); }}/* * 优先重写common.php中对应方法 * ci 框架内部的load异常、config异常、loader异常等会自动抛出, * 但common.php中的函数定义之类错误无法捕捉 * @time 2019/3/20 18:46 * @author * @param $message * @param int $status_code /function show_error($message){ redis_list_add($message); exit(json_encode([‘success’ => ‘-1’, ‘code’ => ‘503’, ‘msg’ => ‘ci_exception_1’]));}/* * 优先重写common.php中对应方法 * @time 2019/3/21 15:34 * @author * @param string $page */function show_404($page = ‘’){ redis_list_add(“url: " . $page . " not found”); exit(json_encode([‘success’ => ‘-1’, ‘code’ => ‘404’, ‘msg’ => ‘Not Found’]));}延伸在基类中可以处理错误等级区分对待
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