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php + check domain name script


phppaper

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You can use checkdnsrr() this will check dns records for the domain you enter. You can have it check for MX, A, CNAME records etc... It defaults to MX records.

 

That would probably be the easiest. Run a domain name through that, if it returns true, the domain exists, if it returns false, then it is probably available for purchase.

 

I use this in combination with an email formatting regex string to ensure that email addresses are not only valid format, but a valid domain as well.

 

Nate

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