IceJOKER

$field_cat = "1,2,4";
$exploded = explode(',', $field_cat);
$query = $mysqli->prepare('SELECT id FROM Publication WHERE id in (?, ?, ?)');
$query->bind_param('iii', $exploded[0], $exploded[1], $exploded[2]);
$query->execute();

$('[data-SOMETHING]').attr('data-SOMETHING'); //или $.data('SOMETHING');
$('[data-SOMETHING]').text(); //если хранится внутри span-а

$('input').val($('[data-SOMETHING]').data('SOMETHING'))

RewriteCond %{QUERY_STRING} ^(page=2)/$
RewriteRule ^news?$ /news?%1 [L,R=301]