Fix #1, add a static method to anonymize addresses

example.php

@@ -25,3 +25,10 @@
 
 var_dump($ipAnonymizer->anonymize('2610:28:3090:3001:dead:beef:cafe:fed3'));
 // returns 2610:28:3090:3001::
+
+// You can use this class also in a static way:
+var_dump(IpAnonymizer::anonymizeIp('192.168.178.123'));
+// returns 192.168.178.0
+
+var_dump(IpAnonymizer::anonymizeIp('2610:28:3090:3001:dead:beef:cafe:fed3'));
+// returns 2610:28:3090:3001::

src/IpAnonymizer.php

@@ -1,4 +1,5 @@
 <?php
+
 namespace geertw\IpAnonymizer;
 
 class IpAnonymizer {
@@ -12,6 +13,17 @@ class IpAnonymizer {
      */
     public $ipv6NetMask = "ffff:ffff:ffff:ffff:0000:0000:0000:0000";
 
+    /**
+     * Anonymize an IPv4 or IPv6 address.
+     *
+     * @param $address string IP address that must be anonymized
+     * @return string The anonymized IP address. Returns an empty string when the IP address is invalid.
+     */
+    public static function anonymizeIp($address) {
+        $anonymizer = new IpAnonymizer();
+        return $anonymizer->anonymize($address);
+    }
+
     /**
      * Anonymize an IPv4 or IPv6 address.
      *