PHP: inconsistent results for gethostbyname() and checkdnsrr() -


i'm writing simple form check if .com domain available. i'm evaluating 3 methods (@dns_get_record, gethostbyname() , checkdnsrr()) bunch of test domain names below code, getting not available entries gethostbyname() , checkdnsrr(), can see @ http://suggestmyname.com/nonwp/arraypush.php if refresh few times. don't issue when running on local testing server, know why inconsistency? not of domains being checked on remote server, on local testing server.

$sdomains = array(); array_push($sdomains, 'etc.com');  function domainavailable1($domain){ $results = @dns_get_record($domain, dns_any); return empty($results); } function domainavailable2($domain){ return gethostbyname($domain) == $domain; } function domainavailable3($domain){ return !checkdnsrr($domain, 'any'); }  echo '<table><tr><td>@dns_get_record</td><td>gethostbyname</td><td>checkdnsrr</td></tr>';         foreach($sdomains $sdomain){ if (domainavailable1($sdomain) == true){                                 echo '<tr><td bgcolor=green>' . $sdomain . ' available!</td>';             } else {             echo '<tr><td bgcolor=red>' . $sdomain . ' not available.</td>';             } if (domainavailable2($sdomain) == true){                                 echo '<td bgcolor=green>' . $sdomain . ' available!</td>';             } else {             echo '<td bgcolor=red>' . $sdomain . ' not available.</td>';             } if (domainavailable3($sdomain) == true){                                 echo '<td bgcolor=green>' . $sdomain . ' available!</td></tr>';             } else {             echo '<td bgcolor=red>' . $sdomain . ' not available.</td></tr>';             } }

i'm not sure using of functions (basically using dns in general) reliable method determine if domain available.

i have plenty of domains registered have absolutely no dns records can't resolved means, domains of course taken.

while domains have dns records, there cases there aren't any. example domain mymoney.com in script says available through 3 checks, domain registered.

your best bet use whois query appropriate registrar given tld , use whois determine availability. think if try use dns, there false positives or other problems run into.


Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more