Login/Register/confirm and new comment feature

base/helpers.php

@@ -0,0 +1,16 @@
+<?php
+
+function guidv4($data = null)
+{
+  // Generate 16 bytes (128 bits) of random data or use the data passed into the function.
+  $data = $data ?? random_bytes(16);
+  assert(strlen($data) == 16);
+
+  // Set version to 0100
+  $data[6] = chr(ord($data[6]) & 0x0f | 0x40);
+  // Set bits 6-7 to 10
+  $data[8] = chr(ord($data[8]) & 0x3f | 0x80);
+
+  // Output the 36 character UUID.
+  return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
+}