Only attempt to show initials if not empty

email_parser_cron.php

@@ -0,0 +1 @@
+<?php

functions.php

@@ -35,11 +35,13 @@ function key32gen()
 }
 
 function initials($str) {
+  if(!empty($str)){
     $ret = '';
     foreach (explode(' ', $str) as $word)
       $ret .= strtoupper($word[0]);
     return $ret;
   }
+}
 
 function removeDirectory($path) {
   if (!file_exists($path)) {