Error Level in php

The error level in php will certainly encounter more or less error reminders during php programming. these error prompts guide us to write cleaner code, today, we will first write out the error types we listed. First, we will dig a hole and write some knowledge about php errors and exceptions.

Deprecated: minimum error. The program continues to execute.

If a Notice notification-level error is reported directly using an undeclared variable, the program continues to execute

The expected result may not be returned due to an error at the Warning level.

Fatal error: Fatal error. The program is not executed.

Parse error syntax parsing error. The maximum error level does not display any other error information.

E_USER _ related errors related to user settings