如何調整CodeIgniter的報錯級別

不使用CI的時候，我們可以使用 error_reporting(E_ALL); error_reporting(0); 這類的代碼來控制報錯級別。當然也可以在類中使用這些語句，不過CI自己已經有控制報錯級別的機制在裡面了。

也許你不會經常打開index.php，但是修改就在這個文件裡面：

/*
 *---------------------------------------------------------------
 * 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.');
	}
}

ENVIRONMENT 就是來控制報錯級別的，默認的有三個選項，development testing production，由上面的switch語句控制。代碼已經很清楚了，可以根據自己的需求進行相應更改。