Two PHP Questions (need codes)?

Ncis

New member
Hi, I having a problem with a couple of things....

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I want to add a restriction on my registration form, so it only allows 1 registration per email. What is the php code for this?

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I also want to add a restriction on the length of the password.

I want it to have at least 6 characters.

What is the code to do this?

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It would be good if you could post the code here or give me to a site there will show me a tutorial for it.

thanks!
 
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