an error reporting function e_all & e_notice stands for code example

Example 1: php errorreporting all

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

Example 2: e_notice in php

// Reporting E_NOTICE 
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);