Jak získat ID dotazu dotazovaného již dávno a odeslat jej do jiné tabulky?

Přidejte skryté pole:

na 1.php

echo '<form style="display:none;" name="answer_'.$index.'" method="post" action="output.php">'; // I dont think openning form from row to row would be nice!

echo '<input type="hidden" name="questionid" value="<?php echo $row[ID]?>"/>'

echo '<textarea  type="text" class="addtext" name="addtext" required id="addtext_'.$index.'" placeholder="Please type your answer here.."  ></textarea>';

echo '<button onClick="addsubmit('.$index.');" type="submit" id="addsubmit_'.$index.'" class="addsubmit"><B>Submit</B></button>';

echo '</form>';

na straně 2.php

$qid = $_POST['questionid']; //get the question id and insert in the table