Home php教程 php手册 PHP Notice: Undefined index: ... 问题的解决方法:

PHP Notice: Undefined index: ... 问题的解决方法:

Jun 06, 2016 pm 07:58 PM
index notice php undefined

http://www.mycodes.net/74/2360.htm 首先,这个不是错误,是warning。所以如果服务器不能改,每个变量使用前应当先定义。 方法1:服务器配置修改 修改php.ini配置文件,error_reporting = E_ALL ~E_NOTICE 方法2:对变量进行初始化,规范书写(比较烦琐,因

http://www.mycodes.net/74/2360.htm

首先,这个不是错误,是warning。所以如果服务器不能改,每个变量使用前应当先定义。


    方法1:服务器配置修改 
    修改php.ini配置文件,error_reporting = E_ALL & ~E_NOTICE


    方法2:对变量进行初始化,规范书写(比较烦琐,因为有大量的变量)。但还没有找到好定义方法,望大家指教


    方法3:每个文件头部加上:error_reporting(0); 如果不行,只有打开php.ini,找到display_errors,设置为display_errors = Off。以后任何错误都不会提示。


    方法4 :做判断:isset($_GET["page"])      if-else判断

    或者加上''@''表示这行如果有错误或是警告不要輸出
    如:@$page=$_GET["page"]


    方法5:file1.php文件把$xx变量付一个值,用post传递给file2.php,
    如果file2.php没有$xx的定义,而直接使用$yy=$xx; 系统就会报错:"undifined variaable $xx", 如果file2.php的文件开始用$xx="";定义,那么file1.php的$xx值就传不过来了!


    file2.php里可以这样
    if(!isset($xx)) $xx="";

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