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I have form who validate user input, I use PHP, Javascript and AJAX.
I want to check every field with regex
But I’m little confuse about method to check it…
What’s better method to check it Javascript or PHP?
Thanks in advance..
Both. Use JavaScript for the convenience of the user as you can report an error before they submit the form and have to wait for it to process. But never rely on that because evading JavaScript validation is as easy as turning JavaScript off. So always validate on the server side, too. If you’re only going to use one then it should always be server side validation.