Generic Canonical Tag Plug & Play

<?php

$canonical = "https://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

echo '<link rel="canonical" href="'.$canonical.'">';

?>

Canonical Tag Without Parameter

<?php

$canonical = "https://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

$noParamsCanonical = strtok($canonical, '?');

echo '<link rel="canonical" href="'.$noParamsCanonical.'">';

?>