递归函数_目录树

递归函数_目录树 $data_arr = array( 0 => array('id' => '1','pid' => '0','name' => '菜单1',), 1 => array('id' => '2','pid' => '1','name' => '菜单1-1',), 2 => array('id' => '3','pid' => '1','name' => '菜单1-2',), 3 => array('id' => '4','pid' => '0','name' => '菜单2',), 4 => array('id' => '5','pid' => '4','name' => '菜单2-1',), 5 => array('id' => '6','pid' => '5','name' => '菜单2-1-1',), 6 => array('id' => '7','pid' => '5','name' => '菜单2-1-2',), 7 => array('id' => '8','pid' => '4','name' => '菜单2-2',), 8 => array('id' => '9','pid' => '8','name' => '菜单2-2-1',), );