show posted data after submission with all old submission - php

Question

I have a form, which have some input fields and also have some check box fields. If any one fill fields and select some checkbox and then submit. Then some data according submission shows on another div.
Now If same person again fill that fields after first submission and select checkbox and submit. Then some data according submission shows on div. But it replace old submission content. I need all submission content, on div including all old submission content.
My code is:
<form class="reservation-form mb-0" action="" method="post" novalidate autocomplete="off">
<input name="name1" class="form-control required " type="text" placeholder="Enter Name" aria-required="true" required>
<input name="age" class="form-control required " type="number" placeholder="Enter Age" aria-required="true" required>
<select required id="selectarea" class="form-control" name="selectgender">
<option>Select Gender</option>
<option value="Male">Male</option>
<option value="Female">Female</option>
</select>
<?php
$query1=mysql_query("select * from lab_location_package_rel where city_id='$selectcity1' AND area_id='$selectarea1' AND lab_id='$selectlab1'") or die (mysql_error());
while($value = mysql_fetch_array($query1)) {
$mrp=$value['mrp'];
$opp=$value['offer_price_perc'];
$package_id=$value['package_id'];
$per=$mrp*$opp/100;
$total=$mrp-$per;
$query2=mysql_query("select * from package_master where id='$package_id'") or die (mysql_error());
$value2 = mysql_fetch_array($query2);
?>
<li class="list-group-item">
<div class="checkbox">
<input type="checkbox" id="checkbox" name="namec[]" value="<?php echo $value["id"]; ?>" />
<label for="checkbox">
<b>Package Name:</b> <?php $package_title1=$value2['package_title']; echo $package_title1;?> <br>
<b>MRP:</b> <strike><?php $mrp1=$value['mrp']; echo $mrp1; ?> </strike><br>
<b>Offer Price:</b> <?php $total1=$total; echo $total1; ?>
</label>
</div>
</li>
<?php }
?>
<input type="submit" class="pull-right btn btn-warning" value="Submit" name="submit">
</form>
Now After submission, for display code:
<div class="col-md-5">
<h5>Patient Details</h5>
<table class="table table-bordered">
<tbody>
<tr>
<th>Name</th>
<th>Age</th>
<th>Sex</th>
<th></th>
</tr>
<tr>
<?php if(isset($_POST["submit"])==true)
{ ?>
<td><?php echo $_POST['name1']; ?></td>
<td><?php echo $_POST['age']; ?></td>
<td><?php echo $_POST['selectgender']; ?></td>
<td>Update</td>
<?php } ?>
</tr>
</tbody>
</table>
<br /><br />
<h5>Package Details</h5>
<table class="table table-bordered">
<tbody>
<tr>
<th>Package</th>
<th>MRP</th>
<th>Offer Price</th>
<th></th>
</tr>
<tr>
<?php
extract($_POST);
foreach($_POST['namec'] as $selected){
$query1=mysql_query("select * from lab_location_package_rel where id='$selected'") or die (mysql_error());
while($value = mysql_fetch_array($query1)) {
$mrp=$value['mrp'];
$opp=$value['offer_price_perc'];
$package_id=$value['package_id'];
$per=$mrp*$opp/100;
$total=$mrp-$per;
$query2=mysql_query("select * from package_master where id='$package_id'") or die (mysql_error());
$value2 = mysql_fetch_array($query2);
?>
<tr>
<td><?php echo $value2['package_title']; ?></td>
<td><strike><?php echo $value['mrp']; ?></strike></td>
<td><?php echo $total; ?></td>
<td>Delete</td>
</tr>
<?php
}
}
}
?>
</tr>
</tbody>
</table>
</div>