--- scanner.module	2009-03-05 12:34:32.000000000 -0700
+++ scanner.module	2009-03-15 02:22:08.000000000 -0700
@@ -872,12 +872,21 @@
        * REPLACE
        * + check to see if already processed
        */
       else if (!isset($processed[$field][$row->nid])) {
         $hits = 0;
 
+        if ( version_compare( PHP_VERSION, '5.1.0', '<' ) ) {  
+          // PHP < 5.1.0's preg_replace doesn't have the ability to count the matches.  
+          // So we do this beforehand with a preg_match_all, and then do the replacement.  
+          // (This is really a hack)  
+          $hits = preg_match_all("/$search_php/$flag", $content, $matches); 
+          $newcontent = preg_replace("/$search_php/$flag", $replace, $content, -1);        
+        } else {
         $newcontent = preg_replace("/$search_php/$flag", $replace, $content, -1, $hits);
-
+        }
 
         $thenode = node_load(array('nid' => $row->nid));
 
         //see if we're dealing with a CCK text field and therefore need to strip the
         // "_value" off the end:
         preg_match('/(.+)_value$/', $field, $matches);