The following Ajax Load More variables (PHP) are accessible within Repeater Templates.

$alm_page Returns the current page number. echo $alm_page;
$alm_current Returns the current item number in the Ajax Load More loop - count will reset to zero with every 'Load More' action. echo $alm_current;
$alm_item Returns the current item number within your entire Ajax Load More query. echo $alm_item;
$alm_found_posts Returns the total number of posts found in the Ajax Load More query. echo $alm_found_posts;

Usage Example