Solution to Undefinedindex and Undefinedvariable in php

Source: Internet
Author: User
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Solution to Undefinedindex and Undefinedvariable in php
This prompt always appears in the php project process. at first, $ act was used to accept the data from form post: $ act =$ _ POST ['AC'];

This prompt always appears in the php project process. at first, $ act was used to accept the data from form post: $ act =$ _ POST ['AC'];

The above code always prompts: Notice: Undefined index: act in F: \ windsflybook \ post. php on line 18

In addition, some such prompts may also appear: Notice: Undefined variable: Submit.

Cause: The variable is undefined.

Solution: 1) error_reporting settings: locate error_reporting = E_ALL and change it to error_reporting = E_ALL &~ E_NOTICE

2) register_globals settings: find register_globals = Off and change it to register_globals = On

Notice: Undefined variable: email in D: \ PHP5 \ ENOTE \ ADDNOTE. PHP on line 9 Notice: Undefined variable: subject in D: \ PHP5 \ ENOTE \ ADDNOTE. PHP on line 9 Notice: Undefined variable: comment in D: \ PHP5 \ ENOTE \ ADDNOTE. PHP on line 9 ........ php does not need to define variables, but what should I do in this case? In C: \ WINDOWS, find the 302 line error_reporting = E_ALL of php. ini in php. ini and change it to error_reporting = E_ALL &~ Restart apache2.2 after E_NOTICE. Solution: modify php. ini and change error_reporting = E_ALL to error_reporting = E_ALL &~ E_NOTICE: display_errors = Off if you do not want to display any errors. if you do not have the permission to modify php. ini, you can add ini_set ("error_reporting", "E_ALL &~ E_NOTICE ");

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