在php中完成表单提交后，是否可以重定向？

I have this form:

<form action="/productcategories/foods/" method="GET">
    <input type="hidden" name="add-to-cart" value="<?php echo htmlspecialchars($getid); ?>" />
    <input type="number" name="quantity" min="1" value="1">
    <br><input type="submit" value="Buy" />
</form>

If I hit submit it'll redirect me to a Wordpress plugin generated page, does the add-to-cart action but after I done this form I want to redirect back the user to the current page. Is there any method to do it from the page where the form stored? Like JavaScript or something like that?

You can submit the form and open the redirection in tag, not leaving your site. Then possibly using javascript you can remove on variety of ways, clicking on button or after it will fully load.