sajanp · May 22, 2013 10:56 · May 22, 2013
diff --git a/whoisnz.php b/whoisnz.php
@@ -0,0 +1,81 @@
+<?php
+/**
+ * Basic WHOIS query script for exipry date
+ */
+
+// feed domain via script, or GET request
+$domain = (PHP_SAPI == 'cli') ? $argv[1] : $_GET['domain'];
+
+// exit if no domain is provided
+if (!$domain) {
+    exit('No domain');
+}
+
+// only NZ domains
+$nz = substr($domain, -3, 3);
+if ($nz !== '.nz') {
+    exit('Domain is not an NZ TLD');
+}
+
+
+// return date
+echo Whois::queryExpiry($domain);
+
+
+/**********  DO NOT EDIT BELOW THIS LINE  **********/
+
+/**
+ * Basic whois wrapper
+ */
+class Whois
+{
+    /**
+     * Query Whois server via CLI -> Shell access is required
+     *
+     * @param  string $domain   Domain in question
+     * @param  string $timezone PHP timezone -> http://php.net/manual/en/timezones.php
+     * @param  string $format   Formatted date -> http://php.net/manual/en/function.date.php
+     * @return string           Expiry time domain
+     */
+    public static function queryExpiry($domain, $timezone = 'Pacific/Auckland', $format = 'd/m/Y')
+    {
+        // CLI whois
+        $whois = shell_exec(escapeshellcmd('whois ' . $domain));
+
+        $lines = explode("\n", $whois);
+        foreach ($lines as $val) {
+            if (strpos($val, 'domain_datebilleduntil') !== false) {
+                // save to DateTime -> Compensate for timezone
+                $date = new DateTime(self::getString($val, ': '));
+                break;
+            }
+        }
+
+        // return expiry date in requested format/timezone
+        $date->setTimezone(new DateTimeZone($timezone));
+        return $date->format($format);
+    }
+
+    /**
+     * Extract a substring between two tokens
+     *
+     * @param  string         $string String to search
+     * @param  string         $start  Starting token
+     * @param  boolean|string $end    End token. False = end of $search
+     * @return string                 String between $start and $end
+     */
+    public static function getString($string, $start, $end = false)
+    {
+        if ((strpos($string, $start) === false)
+            || ($end !== false && (strpos($string, $end) === false))
+        ) {
+            return false;
+        }
+
+        $start = strpos($string, $start) + strlen($start);
+
+        return ($end)
+            ? substr($string, $start, (strpos($string, $end, $start) - $start))
+            : substr($string, $start);
+    }
+}