1、Ci的报错级别设置一般在index.php中，可以设置ENVIRONMENT。一般来讲，开发的时候选择development模式，正式发布之后，选择production模式。
代码如下：
/* *--------------------------------------------------------------- * APPLICATION ENVIRONMENT *--------------------------------------------------------------- * * You can load different configurations depending on your * current environment. Setting the environment also influences * things like logging and error reporting. * * This can be set to anything, but default usage is: * * development * testing * production * * NOTE: If you change these, also change the error_reporting() code below * */ define('ENVIRONMENT', 'development'); /* *--------------------------------------------------------------- * ERROR REPORTING *--------------------------------------------------------------- * * Different environments will require different levels of error reporting. * By default development will show errors but testing and live will hide them. */
if (defined('ENVIRONMENT')) { switch (ENVIRONMENT) { case 'development': error_reporting(E_ALL); break; case 'testing': case 'production': error_reporting(0); break;
default: exit('The application environment is not set correctly.'); } }
2、CI的错误日志默认存放在application/logs/log-[time].php中，日志的级别、路径、时间格式等，在application/config/config.php文件中设置，相关代码如下：
/* |-------------------------------------------------------------------------- | Error Logging Threshold |-------------------------------------------------------------------------- | | If you have enabled error logging, you can set an error threshold to | determine what gets logged. Threshold options are: | You can enable error logging by setting a threshold over zero. The | threshold determines what gets logged. Threshold options are: | | 0 = Disables logging, Error logging TURNED OFF | 1 = Error Messages (including PHP errors) | 2 = Debug Messages | 3 = Informational Messages | 4 = All Messages | | For a live site you'll usually only enable Errors (1) to be logged otherwise | your log files will fill up very fast. | */ $config['log_threshold'] = 0;
/* |-------------------------------------------------------------------------- | Error Logging Directory Path |-------------------------------------------------------------------------- | | Leave this BLANK unless you would like to set something other than the default | application/logs/ folder. Use a full server path with trailing slash. | */ $config['log_path'] = '';
/* |-------------------------------------------------------------------------- | Date Format for Logs |-------------------------------------------------------------------------- | | Each item that is logged has an associated date. You can use PHP date | codes to set your own date formatting | */ $config['log_date_format'] = 'Y-m-d H:i:s';
3、在自己写代码需要记录日志时，可以调用全局函数log_message('级别','消息')，级别的参数为(调试 debug, 错误 error, 信息info)，内容自己定义即可。
log_message('error', 'error message.'); log_message('debug', 'debug message.'); log_message('info', 'info message.');
