Grouping posted values for echo after they're submitted - php

Question

Whats the best way to print the meterage1 and product1 posts as a single related string value when i loop through the foreach? So for example, product1 input box value which is related to meterage1 and product2 relates to meterage2.
Here is my form:
<form id="orderform" name"orderForm" action="tomypage.php" method="post">
<a id="add">+</a>
<table id="ordertable" width="533" border="0" cellspacing="0" cellpadding="2">
<tbody>
<tr>
<td width="33%">Product Code (e.g 66203)</td>
<td width="33%">mtrs sq Required (e.g 10)</td>
<td width="33%">Preview Image</td>
</tr>
<tr class="item">
<td class="prodcode"><input type="text" name="prodcode" id="prodcode" /></td>
<td class="meterage"><input type="text" name="meterage" id="meterage" /></td>
<td class="imgsample"></td>
</tr>
<tr class="item">
<td class="prodcode"><input type="text" name="prodcode1" id="prodcode" /></td>
<td class="meterage"><input type="text" name="meterage1" id="meterage" /></td>
<td class="imgsample"></td>
</tr>
<tr class="item">
<td class="prodcode"><input type="text" name="prodcode2" id="prodcode" /></td>
<td class="meterage"><input type="text" name="meterage2" id="meterage" /></td>
<td class="imgsample"></td>
</tr>
</tbody>
</table>
<button>Submit</button>
</form>
My current PHP foreach:
if ($_POST) {
foreach($_POST as $key => $value) {
$orderdetails = $key.' '.$value.'m<sup>2</sup><br />';
}
} else {
$orderdetails = 'No Order Details Selected';
}

Answer 1

You can assign form fields to an array, instead of numbering them, this will give you far more flexibility when accessing their values: i.e.
<input type="text" name="meterage[]" />
<input type="text" name="meterage[]" />
<input type="text" name="meterage[]" />
Then simply do:
print_r($_POST['meterage']);
Or access the $_POST['meterage'] array as required (i.e. loop through for action on each value).
If you then want to loop through the fieldsets, for related products/meterages, you could us:
$number_of_products=count($_POST['prodcode']);
for ( $i=0; $i<$number_of_products; $i++){
echo $_POST['prodcode'][$i]." has the meterage: ".$_POST['meterage'][$i]."<br/>";
}