Magento success page

Question

This has to do with coming up with php for the google trusted store badge - specifically setting the estimated delivery date.

I have this code on my success page that prints the data:

<?php
$order_items = $order->getAllItems();

foreach($order_items as $item) {
    $product = Mage::getModel('catalog/product')->load($item->getProductId());

    echo $product->getAttributeText('estdelivery'); //changed getAttributeText to getData
    echo '|';
}


 ?>

if there is more than one item in the order it will print the attribute data - in this case 6 and 7

as one item has 6 days set in the attribute the other item has 7 days set in the attribute

I need a way in php to only print the higher number i.e. 7

the code i am currently using in the badge is

<span id="gts-o-est-delivery-date"><?php echo $deliveryDate=Date('Y-m-d', strtotime("+7 days")); ?></span>

But I need it to find all the delivery date attributes of all the items and enter the larger number into that code for delivery date

updated so I am using this and it successfully returns the higher of the variables

<?php
$order_items = $order->getAllItems();

foreach($order_items as $item) {
    $product = Mage::getModel('catalog/product')->load($item->getProductId());



}

$a=array($product->getAttributeText('estdelivery'));
$c=0;
foreach($a as $b)
{
if($b>$c)
$c=$b;

}
echo $c;

 ?>

So how do i got from that to the code I am using for estimated delivery date?? will this work below?

<span id="gts-o-est-delivery-date"><?php echo $deliveryDate=Date('Y-m-d', strtotime("$order_items = $order->getAllItems();

foreach($order_items as $item) {
    $product = Mage::getModel('catalog/product')->load($item->getProductId());



}

$a=array($product->getAttributeText('estdelivery'));
$c=0;
foreach($a as $b)
{
if($b>$c)
$c=$b;

}
echo $c;
 days")); ?></span>

Answer 1

If I'm understanding the issue correctly, it seems like this should fix it:

<?php 
    $order_items = $order->getAllItems();
    $maxDelivery = 0;
    foreach($order_items as $item) {
        $product = Mage::getModel('catalog/product')->load($item->getProductId());

        if ($product->getAttributeText('estdelivery') > $maxDelivery) { 
            $maxDelivery = $product->getAttributeText('estdelivery');
        }

    }
    echo $maxDelivery;
?>

Loop through the products and keep track of the largest estdelivery value seen, and print that.