Domain Validation question

Hi,

If I have a list of domains being submitted to a php script in one big string, how can I make sure that they're all proper domains ( I'll define the acceptable extensions ), put them into different array slots, and also format them into 'name.extension'?

Any help would be appreciated

 

parse_url() ?
then just use a regex to validate the extensions

 

Also for splitting them into an array you'll want to use explode() and then a foreach loop to loop through the list of values

 

or parse_url() then http://mattiasgeniar.be/2009/02/07/input-validation-using-filter_var-over-regular-expressions/

 

The problem with the filter_var is that it allows email addresses such as
username@1 which isnt exactly the kind of email you want

 

Thanks guys for your help, I meant submitting domains not email addresses

 

What do you mean by proper domains? Do you also want to check if they are actually used? Or do you just want to make sure that it could be a Domain. So anything like "asdsdadadsqqqqqxcaa1293.com" would be acceptable?

 

I basically want something that can turn a list like :

http://www.google.com
google.com
www.google.com

into just

google.com
google.com
google.com

 

Maybe, but I meant the following:

FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED

Code (markup):

 

Follow this example:

<?php
  $domain = "http://google.com";
  //check if domains valid
  if (!filter_var($domain, FILTER_VALIDATE_URL)){
      echo "Invalid URL";
  } else {
      //format domain to look like "domain.extension";
      $domain = parse_url($domain);
      echo "Valid URL";
      echo $domain['host'];
  }
?>

PHP:

 

FILTER_VALIDATE_URL will validate the following...
http://-/
http://1/
So it's not all that reliable either, plus you would want to validate it before using parse_url

 

In that case, here's a better method:

<?php
$domains = array("http://google.com", "http://www.google.com", "http://google.com", "chipdcnv.com");

foreach ($domains as $domain){
if(!getmxrr($domain, $MXHost)){
$host = parse_url($domain);
echo $host['host']." <br>";
}
}
?>

PHP:

 

...not all hosts will return the mx record lol...The best method is still to use a regex IMO

 

Guys you're geniuses, thank you very much!