Index: taxonomy.php
===================================================================
--- taxonomy.php	(revision 17220)
+++ taxonomy.php	(working copy)
@@ -1387,7 +1387,7 @@
 	$select = "SELECT term_id FROM $wpdb->terms as t WHERE ";
 	$tax_select = "SELECT tt.term_id, tt.term_taxonomy_id FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_id = t.term_id WHERE ";
 
-	if ( is_int($term) ) {
+	if ( is_numeric($term) ) {
 		if ( 0 == $term )
 			return 0;
 		$where = 't.term_id = %d';
@@ -1452,11 +1452,8 @@
  */
 function sanitize_term($term, $taxonomy, $context = 'display') {
 
-	if ( 'raw' == $context )
-		return $term;
+	$fields = array('term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group', 'term_taxonomy_id');
 
-	$fields = array('term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group');
-
 	$do_object = false;
 	if ( is_object($term) )
 		$do_object = true;
@@ -1508,10 +1505,9 @@
  * @return mixed sanitized field
  */
 function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) {
-	if ( 'parent' == $field  || 'term_id' == $field || 'count' == $field || 'term_group' == $field ) {
-		$value = (int) $value;
-		if ( $value < 0 )
-			$value = 0;
+	// Make sure all numeric fields are integers
+	if ( in_array($field, array( 'parent', 'term_id', 'count', 'term_group', 'term_taxonomy_id'))) {
+		$value = max((int) $value, 0);
 	}
 
 	if ( 'raw' == $context )