今天修改公司的網站，提示Notice : Use of undefined constant ，通過下面的方法解決了，最好是error_reporting(0);不需要更改配置

Notice: Use of undefined constant ALL_PS - assumed 'ALL_PS' in E:\Server\vhosts\www.lvtao.net\global.php on line 50 

Notice: Undefined index: EaseTemplateVer in E:\Server\vhosts\www.lvtao.net\libs\template.core.php on line 51 

Notice: Use of undefined constant uid - assumed 'uid' in E:\Server\vhosts\www.lvtao.net\global.php on line 54 

Notice: Undefined index: uid in E:\Server\vhosts\www.lvtao.net\global.php on line 54 

Notice: Use of undefined constant cuid - assumed 'cuid' in E:\Server\vhosts\www.lvtao.net\global.php on line 55 

Notice: Undefined index: cuid in E:\Server\vhosts\www.lvtao.net\global.php on line 55 

Notice: Use of undefined constant shell - assumed 'shell' in E:\Server\vhosts\www.lvtao.net\global.php on line 56 

Notice: Undefined index: shell in E:\Server\vhosts\www.lvtao.net\global.php on line 56 

Notice: Use of undefined constant cshell - assumed 'cshell' in E:\Server\vhosts\www.lvtao.net\global.php on line 57 

Notice: Undefined index: cshell in E:\Server\vhosts\www.lvtao.net\global.php on line 57 

Notice: Use of undefined constant username - assumed 'username' in E:\Server\vhosts\www.lvtao.net\global.php on line 58 

Notice: Undefined index: username in E:\Server\vhosts\www.lvtao.net\global.php on line 58 

Notice: Use of undefined constant cusername - assumed 'cusername' in E:\Server\vhosts\www.lvtao.net\global.php on line 59 

Notice: Undefined index: cusername in E:\Server\vhosts\www.lvtao.net\global.php on line 59 

Notice: Use of undefined constant id - assumed 'id' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 10 

Notice: Use of undefined constant id - assumed 'id' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 14 

Notice: Use of undefined constant content - assumed 'content' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 16 

Notice: Use of undefined constant content - assumed 'content' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 16 

Notice: Use of undefined constant description - assumed 'description' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 17 

Notice: Use of undefined constant description - assumed 'description' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 17 

Notice: Use of undefined constant provinceid - assumed 'provinceid' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 18 

Notice: Use of undefined constant cityid - assumed 'cityid' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 19 

Notice: Use of undefined constant hy - assumed 'hy' in E:\Server\vhosts\www.lvtao.net\companyjob.php on line 20 

Notice: Undefined variable: content in E:\Server\vhosts\www.lvtao.net\libs\template.core.php on line 557 

進入網站會出現大量類似下面的提示，但是可以正常顯示和執行 

Notice: Use of undefined constant ctbTitle - assumed 'ctbTitle' in d:\ctb1.5\ctb\include\config.php on line 23... 

b答案：這些是 PHP 的提示而非報錯，PHP 本身不需要事先宣告變數即可直接使用，但是對未宣告變數會有提示。一般作為正式的網站會把提示關掉的，甚至連錯誤資訊也被關掉 

關閉 PHP 提示的方法 

搜尋php.ini： 

error_reporting = E_ALL 

改為： 

error_reporting = E_ALL & ~E_NOTICE 

還有個不是辦法的辦法就是 

在每個檔案頭上加 

error_reporting(0); 雖然不好弄但是可以解決問題！！！！！！這個比較好用