PHP - 从数据库中获取值并设置为HTML select标记的值

Hope someone can help me out. Developing a stock management system for a herb factory in PHP with a MySQL database. I'm currently developing a page where the user can edit the value of one of the benches that holds the herbs.

I've drawn in the benches details and they're in an array called $bench_data which contains variable herb, quantity, etc.

I have a html select tag where the user selects the herb being produced

Herb*:<br>
<select name='herb' ">
   <option value="default">-----</option>
   <option value="basil">Basil</option>
   <option value="coriander">Coriander</option>
   <option value="parsley">Parsley</option>
   <option value="mint">Mint</option>
   <option value="rosemary">Rosemary</option>
   <option value="thyme">Thyme</option>
</select>

What I want to do is have the herb value of the selected bench already in the select tag when the user enters the page.

I've managed to do it with quantity - 'the php in value'

Quanity<br>
<input type="text" name="quantity" value="<?php echo $bench_data['quantity']; ?>">

but I don't know how to do it when there are different options

Thanks in advance