https://dcblog.dev/form-to-csv-with-php
 

<form action='' method='post'>
<p><label>Name</label><br><input type='text' name='name' value=''></p> 
<p><label>Email</label><br><input type='text' name='email' value=''></p> 
<p><input type='submit' name='submit' value='Submit'></p> 
</form>
<hr>https://dcblog.dev/sticky-forms-with-php
<form method="post" action="">
Name:<input type="text" name="name" value=""/>
<input type="submit" name="submit" value="submit" />
</form>