diff -r 95d9e7eacc83 -r 35b0a72083ca includes/functions.php
--- a/includes/functions.php	Tue Jul 12 22:49:29 2011 -0400
+++ b/includes/functions.php	Wed Mar 13 00:18:23 2013 -0400
@@ -1334,6 +1334,7 @@
  * @param text string hexadecimal number
  * @return string
  */
+if ( !function_exists("hex2bin") ):
 function hex2bin($text)
 {
   $arr = enano_str_split($text, 2);
@@ -1344,6 +1345,7 @@
   }
   return $ret;
 }
+endif;
 
 /**
  * Generates and/or prints a human-readable backtrace