PHP, "Undefined array key"

 

error_reporting(0); 을 맨 위에 <?php 옆에 적어준다.

 

 

<?php error_reporting(0);

 

참고

https://www.simplilearn.com/tutorials/php-tutorial/undefined-index-in-php#how_to_ignore_php_notice_undefined_index

What is an Undefined Index PHP Error? How to Fix It? | Simplilearn