Why is it that the textarea does not get the content of the form in php after it is uploaded?

I used textarea to input information in a page and then submit it to the information processing page. I also used a textarea to get the submitted information in the information processing page. But you can't show it? Excuse me, does anyone know why? Thanks!

This is the relevant code at commit time

<tr>
                <td colspan="2">
                <textarea  name="dish_cook" ></textarea>
                </td>
            </tr>

Here is the code for fetching.

<tr>
            <td colspan="2">
                <textarea name="dish_cook" value=<?php echo $_GET["dish_cook"]?>></textarea>
            </td>

        </tr>