--- includes/file.inc
+++ includes/file.inc
@@ -682,7 +682,7 @@ function file_validate_extensions($file, $extensions) {
 
   // Bypass validation for uid  = 1.
   if ($user->uid != 1) {
-    $regex = '/\.('. ereg_replace(' +', '|', preg_quote($extensions)) .')$/i';
+    $regex = '/\.('. @ereg_replace(' +', '|', preg_quote($extensions)) .')$/i';
     if (!preg_match($regex, $file->filename)) {
       $errors[] = t('Only files with the following extensions are allowed: %files-allowed.', array('%files-allowed' => $extensions));
     }
@@ -959,7 +959,7 @@ function file_scan_directory($dir, $mask, $nomask = array('.', '..', 'CVS'), $ca
           // Give priority to files in this folder by merging them in after any subdirectory files.
           $files = array_merge(file_scan_directory("$dir/$file", $mask, $nomask, $callback, $recurse, $key, $min_depth, $depth + 1), $files);
         }
-        elseif ($depth >= $min_depth && ereg($mask, $file)) {
+        elseif ($depth >= $min_depth && @ereg($mask, $file)) {
           // Always use this match over anything already set in $files with the same $$key.
           $filename = "$dir/$file";
           $basename = basename($file);
--- includes/unicode.inc
+++ includes/unicode.inc
@@ -134,7 +134,7 @@ function drupal_xml_parser_create(&$data) {
   }
 
   // Check for an encoding declaration in the XML prolog if no BOM was found.
-  if (!$bom && ereg('^<\?xml[^>]+encoding="([^"]+)"', $data, $match)) {
+  if (!$bom && @ereg('^<\?xml[^>]+encoding="([^"]+)"', $data, $match)) {
     $encoding = $match[1];
   }
 
@@ -144,7 +144,7 @@ function drupal_xml_parser_create(&$data) {
     $out = drupal_convert_to_utf8($data, $encoding);
     if ($out !== FALSE) {
       $encoding = 'utf-8';
-      $data = ereg_replace('^(<\?xml[^>]+encoding)="([^"]+)"', '\\1="utf-8"', $out);
+      $data = @ereg_replace('^(<\?xml[^>]+encoding)="([^"]+)"', '\\1="utf-8"', $out);
     }
     else {
       watchdog('php', 'Could not convert XML encoding %s to UTF-8.', array('%s' => $encoding), WATCHDOG_WARNING);