How to restart loop with different variable in php/html

as you can see im doing a loop as below. There are 2 data set involved:

$transaction_list_pending;
$transaction_list_completed;

    <?php
        foreach($transaction_list_pending as $transaction) {
    ?> 
        <div id="P<?php echo $transaction->trans_id; ?>" class="modal fade" role="dialog" aria-hidden="true">
            <div class="modal-dialog modal-dialog-centered transaction-details" role="document">
                <div class="modal-content">
                    some content
                </div>
            </div>
        </div>
    <?php } ?>

How do i restart this same loop by using $transaction_list_completed as the variable in the foreach statement?

Suggestion to copy the loop is not what im looking for (maybe if no other solution) as the html content for this Modal consists of hundreds of code line.

Answer

You could merge the arrays:

<?php
    foreach(array_merge($transaction_list_pending, $transaction_list_completed) as $transaction) {
?> 
    <!-- your HTML -->
<?php } ?>