Try this, I am doing reports exactly same way
<?php
$nbsp5 = " ";
foreach($summary as $summary) { ?>
<table width="100%" style="page-break-after:always;">
<tr>
<td colspan="10">
<?php echo "<b>Customer</b>: <font color='blue'>".$summary->caccountname; ?>
<?php echo "</font>".$nbsp5 ." <b>Order Number</b>: <font color='blue'>".$summary->OrderNum; ?>
<?php echo "</font>".$nbsp5 ." <b>Sales rep</b>: <font color='blue'>".$summary->RepName; ?>
<?php echo "</font>".$nbsp5 ." <b>Due Date</b>: <font color='blue'>".substr($summary->DueDate,0,10); ?>
</td>
</tr>
<tr>
<td colspan="10"><hr></td>
</tr>
<tr>
<td colspan="10">
<table class="sortable" width="90%">
<tr>
<td><b>Product</b></td>
<td><b>Ordered</b></td>
<td><b>Processed</b></td>
<td><b>Outstanding</b></td>
<td><b>Dispatched</b></td>
<td><b>Available (incl FJ)</b></td>
<td><b>Available FJ</b></td>
</tr>
<?php foreach($$linedetails as $linedetails){ ?>
<tr>
<td><?php echo $linedetails->Product; ?></td>
<td><?php echo $linedetails->cubicvolume; ?></td>
<td><?php echo $linedetails->Processed; ?></td>
<td><?php echo $linedetails->Outstanding; ?></td>
<td><?php echo $linedetails->Dispatched; ?></td>
<td><?php echo $linedetails->TotalVolume; ?></td>
<td><?php echo $linedetails->FJVolume; ?></td>
</tr>
<?php } ?>
</table>
</td>
</tr>
</table>
<?php } ?>
(first <table>
tag moved inside loop)
Please try this answer for both header and footer.