<?php
$linkNumber = 0;
$variables = array("test", "test2");
foreach ($variables as $variable){
echo '<img src="' . $variable . '" data-slide-index="' . $linkNumber++ . '"/>' . "\n";
}
echo '<img src="#" data-slide-index="' . $linkNumber . '">';
?>
PD9waHAKJGxpbmtOdW1iZXIgPSAwOwoKJHZhcmlhYmxlcyA9IGFycmF5KCJ0ZXN0IiwgInRlc3QyIik7Cgpmb3JlYWNoICgkdmFyaWFibGVzIGFzICR2YXJpYWJsZSl7CiAgICAgZWNobyAnPGltZyBzcmM9IicgLiAkdmFyaWFibGUgLiAnIiBkYXRhLXNsaWRlLWluZGV4PSInIC4gJGxpbmtOdW1iZXIrKyAuICciLz4nIC4gIlxuIjsKfQplY2hvICc8aW1nIHNyYz0iIyIgZGF0YS1zbGlkZS1pbmRleD0iJyAuICRsaW5rTnVtYmVyIC4gJyI+JzsKCj8+