To create a free subscription that never truly expires, you should define an expiry date set far into the future, such as '9999-12-31 23:59:59'. This allows for effective management of subscription periods in your code. Using a DateTime object to represent this expiry ensures that the date can be modified for other subscription types easily. When implementing different subscription periods in your switch statement, you may set the expiry to this fixed date when the user opts for the free subscription, making it clear that this offering does not expire.
To define a free subscription expiry date that never expires, you should use a far-future date, such as '9999-12-31 23:59:59', as the expiration value.
Ensure to create a DateTime object that you use consistently throughout your code, modifying it with the needed subscription period or using it as is for the free subscription.
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