random images with accompanying text in different divs

$GLOBALS['somevarname'] = rand(0,10);

return '<h1>'.$GLOBALS['somevarname'].'</h1>';

if (isset($GLOBALS['somevarname']))
{
  return '<h1>'.$GLOBALS['somevarname'].'</h1>';
}
else
{
  return 'Global was not set';
}

//magic code here to get random image and related text
$modx->setPlaceholder('theImage', $imageOutput);
$modx->setPlaceholder('theText', $textOutput);

[[RandomImageAndQuoteSnippet]]

...


<div id="uptop">[+theImage+]</div>

...


<div id="downhere">[+theText+]</div>

$quote[] = "Text 1";
$quote[] = "Text 2";
$quote[] = "Text 3";
$quote[] = "Text 4";

if(!isset($id)) {
   $id = $modx->documentIdentifier;
}

if ($id == '1') {
 return "Text for Page 1";
}

else
 if ($id == '6'){
 return "Text for Page 6";
}

else {
 $randomquote = rand(1, count($quote));
 return $quote[$randomquote];
}

$id = $modx->documentIdentifier;