':''; echo ($sort_key=='student_id' and $sort_order=='1')?'\'遞減\'':''; echo "" ?> 序號 ':''; echo ($sort_key=='student_serial' and $sort_order=='1')?'\'遞減\'':''; echo "" ?> 學號   ':''; echo ($sort_key=='student_class' and $sort_order=='1')?'\'遞減\'':''; echo "" ?> 班級   ':''; echo ($sort_key=='student_num' and $sort_order=='1')?'\'遞減\'':''; echo "" ?> 座號   ':''; echo ($sort_key=='student_sex' and $sort_order=='1')?'\'遞減\'':''; echo "" ?> 性別   ':''; echo ($sort_key=='student_name' and $sort_order=='1')?'\'遞減\'':''; echo "" ?> 姓名