Php Notice: Use of undefined constant Solution

I suddenly encountered the php Notice: Use of undefined constant error when I was doing php. One is that the variable is undefined. Let's take a look at the solution.

Error Message

Php Notice: Use of undefined constant

Analysis

These are PHP prompts rather than errors. PHP itself can be directly used without declaring variables in advance, but there will be prompts for un-declared variables. Generally, when a website is a formal website, it will turn off the prompt and even the error message.

Solution

How to disable PHP prompts

Search for php. ini:

　　

The Code is as follows:	Copy code
Error_reporting = E_ALL Changed: Error_reporting = E_ALL &~ E_NOTICE

There is another way to do this:

Add each file header

　

The Code is as follows:	Copy code
Error_reporting (0); the problem can be solved even though it is difficult to solve.

Foreign reference articles

Hello,
You need to change your php. ini file

Find the word "error_reporting" in your php. ini file and make

Change like below ..

The Code is as follows:	Copy code
Error_reporting = E_ALL &~ E_NOTICE &~ E_STRICT

Regards
R. Sureshkannan