REPLACE...IN.....WITH.... 的使用

REPLACE...IN.....WITH....   的使用，例子用于改变alv的gt_fieldcat_alv

LOOP AT gt_fieldcat_alv ASSIGNING <fs_fieldcat> .
    IF <fs_fieldcat>-fieldname = 'DYLLKC'.
      REPLACE '所在月' IN <fs_fieldcat>-seltext_l WITH lilun.
    ELSE.
      SEARCH <fs_fieldcat>-seltext_l FOR '当月'.                       "如果<fs_fieldcat>-seltext_l中包含‘当月’返回sy-subrc = 0
      IF sy-subrc = .
        REPLACE '当' IN <fs_fieldcat>-seltext_l WITH l_month_curr.     "在‘当’后面插入变量l_month_curr
      ENDIF.
      SEARCH <fs_fieldcat>-seltext_l FOR '次月'.
      IF sy-subrc = .
        REPLACE '次' IN <fs_fieldcat>-seltext_l WITH l_month_last.
      ENDIF.
    ENDIF.
  ENDLOOP.