Refresh page after form submitting

Question

I have a little problem. I want to reload my page after submitting a form.

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                <span>2020-12-08 12:10</span>
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<pre><code><form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>"> <!-- notice the updated action -->
<textarea cols="30" rows="4" name="update" id="update" maxlength="200" >


 

on your full page, you could have this