What does the PHP error message “Notice: Use of undefined constant” mean?

Question

PHP is writing this error in the logs: \"Notice: Use of undefined constant\".

Error in logs:

PHP Notice:  Use of undefined constant          


        

Answer 1

Looks like the predefined fetch constants went away with the MySQL extension, so we need to add them before the first function...

//predifined fetch constants

define('MYSQL_BOTH',MYSQLI_BOTH);
define('MYSQL_NUM',MYSQLI_NUM);
define('MYSQL_ASSOC',MYSQLI_ASSOC);

I tested and succeeded.