Make phone number a link (bootstrap)

public/themes/bootstrap/inc/footer.inc.php

@@ -13,7 +13,7 @@
         <div class="col-12 col-md-6">
             <?php output_conditional("<h4>[[VAR]]</h4>", get_setting("businessname")); ?>
             <?php
-            output_conditional('<div class="d-flex"><div class="mr-2"><i class="fas fa-phone fa-fw"></i></div> <div style="font-size: 130%;">[[VAR]]</div></div>', get_setting("phone"));
+            output_conditional('<div class="d-flex"><div class="mr-2"><i class="fas fa-phone fa-fw"></i></div> <div><a style="font-size: 130%; color: inherit;" href="tel:[[VAR]]">' . get_setting("phone") . '</a></div></div>', preg_replace("/[^0-9+]/", "", get_setting("phone")));
             output_conditional('<div class="d-flex"><div class="mr-2"><i class="fas fa-map fa-fw"></i></div> <div>[[VAR]]</div></div>', str_replace("\n", "<br />\n", get_setting("address")));
             output_conditional('<div class="d-flex"><div class="mr-2"><i class="fas fa-envelope fa-fw"></i></div> <div>[[VAR]]</div></div>', get_setting("email"));
             ?>