# Method Parser.XML.Tree.AbstractSimpleNode()->walk_inorder()

Method walk_inorder

  ``int` walk_inorder(`function`(`AbstractSimpleNode`, `mixed` ... :`int`|`void`) `callback`, `mixed` ... `args`)`

Description

  Traverse the node subtree in inorder, left subtree first, then root node, and finally the remaining subtrees, calling the function `callback` for every node. If the function `callback` returns STOP_WALK the traverse is promptly aborted and STOP_WALK is returned.