여분필드 사용방법 질문입니다 채택완료

<option value="1"<?php echo get_selected("1", $wr_3);?>>euler a</option>
<option value="2"<?php echo get_selected("2", $wr_3);?>>euler</option>
<option value="3"<?php echo get_selected("3", $wr_3);?>>DPM++ 2S a</option>
<option value="4"<?php echo get_selected("4", $wr_3);?>>DPM++ 2M</option>
<option value="5"<?php echo get_selected("5", $wr_3);?>>DPM++ SDE</option>
<option value="6"<?php echo get_selected("6", $wr_3);?>>DPM++ 2S a Karras</option>
<option value="7"<?php echo get_selected("7", $wr_3);?>>DPM++ 2M Karras</option>
<option value="8"<?php echo get_selected("8", $wr_3);?>>DPM++ SDE Karras</option>
<option value="9"<?php echo get_selected("8", $wr_3);?>>DDIM</option>

이런식으로 바꿔봤는데 출력이 되질 않네요... $ 때고 wr_3만 넣으면 오류가 나구요.,..

<option value="euler a"<?php echo get_selected("1", $type);?>>euler a</option>
<option value="euler"<?php echo get_selected("2", $type);?>>euler</option>
<option value="DPM++ 2S a"<?php echo get_selected("3", $type);?>>DPM++ 2S a</option>
<option value="DPM++ 2M"<?php echo get_selected("4", $type);?>>DPM++ 2M</option>
<option value="DPM++ SDE"<?php echo get_selected("5", $type);?>>DPM++ SDE</option>
<option value="DPM++ 2S a Karras"<?php echo get_selected("6", $type);?>>DPM++ 2S a Karras</option>
<option value="DPM++ 2M Karras"<?php echo get_selected("7", $type);?>>DPM++ 2M Karras</option>
<option value="DPM++ SDE Karras"<?php echo get_selected("8", $type);?>>DPM++ SDE Karras</option>
<option value="DDIM"<?php echo get_selected("8", $type);?>>DDIM</option>

이렇게 하니 됐네요 감사합니다!