combining two sections

I have slideshow pics in one section and some testimonials in another. For each slide, I want to add a random testimonial.

something like:

// load records
list($home_slideshowRecords, $home_slideshowMetaData) = getRecords(array(
'tableName' => 'home_slideshow',
));
list($slidequotesRecords, $slidequotesMetaData) = getRecords(array(
'tableName' => 'testimonials',
'orderBy' => "RAND()",
'limit' => $home_slideshowMetaData['totalRecords'],
));

?><<?php ?>?xml version="1.0" encoding="utf-8"?>
<Slideshow>
<items>
<?php foreach ($home_slideshowRecords as $home_slideshowRecord): ?>
<?php foreach ($home_slideshowRecord['slide'] as $upload): ?>
<item>
<thumbnailPath><?php echo $upload['thumbUrlPath'] ?></thumbnailPath>
<largeImagePath><?php echo $upload['urlPath'] ?></largeImagePath>
<fullScreenImagePath><?php echo $upload['urlPath'] ?></fullScreenImagePath>
<testimonial><![CDATA[&nbsp;<?php echo A SLIDESHOW QUOTE HERE?>]]></testimonial>
</item>
<?php endforeach ?>
<?php endforeach ?>
</items>
</Slideshow>

The problem I am having (if my list code is correct and making a number of testimonials = to the number of images) is that i dont know how to set up a counter or keep track of which testimonial is showing because they arent numbered (if thats the best way?) Or are they numbered because they are in the list? Or do they have to be added to a new array? ... always confused in this area.

thanks for your help.