Notice: In /home/www/www.phpguru.org/htdocs/errors/errors.php on line 5:
That is a notice

Warning: In /home/www/www.phpguru.org/htdocs/errors/errors.php on line 6:
This is a warning

Error: In /home/www/www.phpguru.org/htdocs/errors/errors.php on line 7:
This is an error