Fix undefined indices for some ccTLDs

For some ccTLD domains, the ICANN list does not provide a TLD, such as
.cy of Cyprus. While there is www.nic.cy so unsure if this is a bug or
by design. Will have to follow up with the repo maintainers.

publicsuffixlists/public_suffix_list.php

@@ -631,22 +631,19 @@
   array (
     0 => 'gov.cx',
   ),
-  'cy' => 
-  array (
-    0 => 'ac.cy',
-    1 => 'biz.cy',
-    2 => 'com.cy',
-    3 => 'ekloges.cy',
-    4 => 'gov.cy',
-    5 => 'ltd.cy',
-    6 => 'name.cy',
-    7 => 'net.cy',
-    8 => 'org.cy',
-    9 => 'parliament.cy',
-    10 => 'press.cy',
-    11 => 'pro.cy',
-    12 => 'tm.cy',
-  ),
+  'ac.cy' => 'ac.cy',
+  'biz.cy' => 'biz.cy',
+  'com.cy' => 'com.cy',
+  'ekloges.cy' => 'ekloges.cy',
+  'gov.cy' => 'gov.cy',
+  'ltd.cy' => 'ltd.cy',
+  'name.cy' => 'name.cy',
+  'net.cy' => 'net.cy',
+  'org.cy' => 'org.cy',
+  'parliament.cy' => 'parliament.cy',
+  'press.cy' => 'press.cy',
+  'pro.cy' => 'pro.cy',
+  'tm.cy' => 'tm.cy',
   'cz' => 'cz',
   'de' => 'de',
   'dj' => 'dj',
@@ -4208,23 +4205,20 @@
     7 => 'mil.ng',
     8 => 'mobi.ng',
   ),
-  'ni' => 
-  array (
-    0 => 'com.ni',
-    1 => 'gob.ni',
-    2 => 'edu.ni',
-    3 => 'org.ni',
-    4 => 'nom.ni',
-    5 => 'net.ni',
-    6 => 'mil.ni',
-    7 => 'co.ni',
-    8 => 'biz.ni',
-    9 => 'web.ni',
-    10 => 'int.ni',
-    11 => 'ac.ni',
-    12 => 'in.ni',
-    13 => 'info.ni',
-  ),
+  'com.ni' => 'com.ni',
+  'gob.ni' => 'gob.ni',
+  'edu.ni' => 'edu.ni',
+  'org.ni' => 'org.ni',
+  'nom.ni' => 'nom.ni',
+  'net.ni' => 'net.ni',
+  'mil.ni' => 'mil.ni',
+  'co.ni' => 'co.ni',
+  'biz.ni' => 'biz.ni',
+  'web.ni' => 'web.ni',
+  'int.ni' => 'int.ni',
+  'ac.ni' => 'ac.ni',
+  'in.ni' => 'in.ni',
+  'info.ni' => 'info.ni',
   'nl' => 
   array (
     0 => 'bv.nl',
@@ -6397,26 +6391,23 @@
   'اليمن' => 'اليمن',
   'xxx' => 'xxx',
   'ye' => 'ye',
-  'za' => 
-  array (
-    0 => 'ac.za',
-    1 => 'agrica.za',
-    2 => 'alt.za',
-    3 => 'co.za',
-    4 => 'edu.za',
-    5 => 'gov.za',
-    6 => 'grondar.za',
-    7 => 'law.za',
-    8 => 'mil.za',
-    9 => 'net.za',
-    10 => 'ngo.za',
-    11 => 'nis.za',
-    12 => 'nom.za',
-    13 => 'org.za',
-    14 => 'school.za',
-    15 => 'tm.za',
-    16 => 'web.za',
-  ),
+  'ac.za' => 'ac.za',
+  'agrica.za' => 'agrica.za',
+  'alt.za' => 'alt.za',
+  'co.za' => 'co.za',
+  'edu.za' => 'edu.za',
+  'gov.za' => 'gov.za',
+  'grondar.za' => 'grondar.za',
+  'law.za' => 'law.za',
+  'mil.za' => 'mil.za',
+  'net.za' => 'net.za',
+  'ngo.za' => 'ngo.za',
+  'nis.za' => 'nis.za',
+  'nom.za' => 'nom.za',
+  'org.za' => 'org.za',
+  'school.za' => 'school.za',
+  'tm.za' => 'tm.za',
+  'web.za' => 'web.za',
   'zm' => 'zm',
   'zw' => 'zw',
   'aaa' => 'aaa',

src/serializeToPHP.php

@@ -91,12 +91,17 @@
     // Check if there are SLD+'s
     if ($tldDot > 0) {
       $tld = substr($line, $tldDot+1);
-      if (is_array($tldArr[$tld])) {
-        // Append to sub-array
-        $tldArr[$tld][] = $line;
+      if (isset($tldArr[$tld])) {
+        if (is_array($tldArr[$tld])) {
+          // Append to sub-array with existing values
+          $tldArr[$tld][] = $line;
+        } else {
+          // Init just one array with the new value
+          $tldArr[$tld] = array($line);  
+        } 
       } else {
-        // Init just one array
-        $tldArr[$tld] = array($line);  
+        // Store just a string, not an array
+        $tldArr[$line] = $line;  
       }
     } else {
       // Else just store the TLD as the key