How do I check if a date entered exists?

To check for a valid date is something that is quite hard to do... which is why PHP has handily created a function that does it for you.

It is very useful, easy to use and can save a lot of hassle with problems in your registration forms and so on when people enter a date of birth that doesn't exist.

But not many people call it. If you need to do any sanity checking on dates on your web forms then it is worth passing a date through this function as one of your checks.

The function is called checkdate() and takes the month, day, year as parameters.

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How do I check if a date entered exists?

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