Array question

[mhoward]

I have an array consiting of quite a few domain names. I want to keep this array and use it, but I also want to create another array from the original array consisting ony of the domain extensions (.com / .co.uk etc...).
What is the best / easiest way to do this?

[mcrbids]

Sorry - I don't understand what you are looking for. What is the format you'd expect the output to be in?

-Ben

[tomhath]

This might be close to what you want. It uses the extensions as the key to get rid of duplicates and count occurences.

You might have other prefixes besides www and ftp.

$ar[0] = "webcacheh07a.cache.pol.co.uk";
$ar[1] = "www.phpbuilder.com";
$ar[3] = "ftp.google.com";

foreach ($ar as $d) {
$matches = preg_match ("/(www.|ftp.)?([^.])(.)/", $d, $field);
if ($matches == 1) {
if (isset($a2[$field[3]]) ) {
$a2[$field[3]]++;
}
else {
$a2[$field[3]] = 1;
}
}
}

foreach ($a2 as $key => $value) {
echo "Key: $key Value: $value <br>\n";
}

[Anon]

Hmmm...I'm not happy with that regexp...

/(.[a-z0-9]+.[a-z]{3,}$|.[a-z0-9]+.[a-z]+.[a-z]{2}$)/i

Will match ".domain.net", ".moma.museum", ".compaq.co.uk", ".telstra.com.au" etc.

If the last term in the domain is two letters, it grabs the last three terms (organisation, top-level, and country), and if it's three letters or more it only grabs the top two parts.

[mhoward]

Basically, users select which domain names to purchase using check booxes. This creates an array in the format of 'mydomain.com, mydomain.co.uk, mydomain.net etc...'
What I want to do, is keep this array, but also create another array consisting of just the extensions 'com, co.uk, net etc...'

[tomhath]

Yea, I noticed it was taking a lot more than just the extensions about 30 seconds after I posted it. Friday night and all that...

[tasistro]

OK if you send a page with something like this for your checkboxes....
<?
echo "
<tr>
<td width=\"120\">.com</td><td><input type=\"checkbox\" name=\"form_input[page1][domain][]\" value=\".com\"></td>
</tr>
<tr>
<td width=\"120\">.co.uk</td><td><input type=\"checkbox\" name=\"form_input[page1][domain][]\" value=\".co.uk\"></td>
</tr>
<tr>
<td width=\"120\">.net</td><td><input type=\"checkbox\" name=\"form_input[page1][domain][]\" value=\".net\"></td>
</tr>";

?>

... you'll get an array called $form_input["page1"]["domain"] with items holding the checked elements. If the user
Selects .com and .co.uk you'll get:

$form_input[page1][domain][0]==".com"
$form_input[page1][domain][1]==".co.uk"

So basically your array is set up from the moment the user posts the page.

From then on you'll do something like this (I take it you placed a text field called mydomain, in which the user
inputs his desired domain):

<?
while (list($key,$domain)=each($form_input["page1"]["domain"])) {
$mybuydomain[]=$mydomain.$domain;
}
// the following loop will create an array with the same elements as $form_input[page1][domain] only
// that it is preceded by the string $mydomain

?>