Ticket #29291: 29291.patch

wp-includes/functions.php

@@ -3431 +3431 @@
  * @return array Sanitized array of IDs.
  */
 function wp_parse_id_list( $list ) {
-        if ( !is_array($list) )
-                $list = preg_split('/[\s,]+/', $list);
+        if ( ! is_array( $list ) )
+                $list = preg_split( '/[\s,]+/', $list );
 
-        return array_unique(array_map('absint', $list));
+        /**
+         * Add support for id ranges separated with a hyphen (-)
+         * Respects the order of the list ids
+         *
+         * @since 4.7.0
+         */
+        for ( $key = 0, $length = count( $list ); $key < $length; $key++ ) {
+                if ( strpos( $list[ $key ], '-' ) !== false ) {
+                        $m = array_map( 'intval', explode( '-', $list[ $key ] ) );
+                        if ( count( $m ) > 1 && reset( $m ) != end( $m ) ) {
+                                unset( $list[ $key ] );
+                                array_splice( $list, $key, 0, range( reset( $m ), end( $m ) ) );
+                                $key = $key + ( end( $m ) - reset( $m ) );
+                                $length = count( $list );
+                        }
+                }
+        }
+
+        return array_unique( array_map( 'absint', $list ) );
 }
 
 /**