When using HTML5 date and you have DD/MM/YYYY is there a way to validate it using PHP so if DD/MM/YYYY has been left as DD/MM/YYYY it throughs an error?
I guess you cannot use empty() as its not empty.
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zkanoca
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Jess McKenzie
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A similar question has already been answered [here][1] [1]: http://stackoverflow.com/questions/11029769/php-function-to-check-if-a-string-is-a-date-regex – alez007 Aug 23 '14 at 22:12
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It's not really clear what you're asking. Are you referring to placeholders? Are those even posted to the server? Regardless of what's posted to the server, your server-side validation is the same it's always been. If you're expecting a date, validate the input as a date. The server-side code never had any guarantee that what's being posted was even handled by the intended HTML code. – David Aug 23 '14 at 22:12
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HTML5 date inputs will send their value as YYYY-mm-dd format, but will display whatever format is locale-friendly to the user.
If nothing is entered (ie. the input is "blank"), then nothing is sent.
So, on the server, empty will work fine.
Niet the Dark Absol
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Note however that you still should validate it if it's *not* empty, because a malicious user could send an arbitrary value for the field. – Yogu Aug 23 '14 at 22:19
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@Yogu Well yes. Or an outdated browser will send anything the user types :p – Niet the Dark Absol Aug 23 '14 at 23:40