Solution for PHP Undefined index and Undefined variable Errors

During project development, I kept getting this notice: Notice: Undefined index: act in *:**.php on line * Also, sometimes this appears: Referenced content Notice: Undefined variable: Submit … and similar notices. Reason: Caused by undefined variables Solutions: 1 error_reporting setting: Find

1
error_reporting = E_ALL

Change to

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error_reporting = E_ALL & ~E_NOTICE

2 register_globals setting: Find

1
register_globals = Off

Change to

1
register_globals = On