How to convert taxonomies terms values into meta values

Sometimes users need conversion any taxonomy terms names into meta data: integer or float values. Reason: desire using range-slider for that values, but trouble in that - range-sliders works only with meta-data. So next algorithm will help you synchronize data:

Create in meta constructor html-item, type: range-slider for example. Let it be filter of bpm (beats per minute) on your site
Save it
Rename meta key of this new range slider, let it be medafi_bpm as example. Of course you can name it as you want with medafi_ prefix only
Now all your posts have nothing < NULL > in this meta field as its new. But you have terms already with names like: 90,120,150, etc...

Open your header.php or functions.php and in the same bottom of the file drop next script:

<?php
global $wpdb;
$pp = $wpdb->get_results("SELECT ID from {$wpdb->posts} WHERE post_type='__POST_TYPE_SLUG_HERE__'");
if (!empty($pp)) {
    foreach ($pp as $p) {
        $terms = wp_get_post_terms($p->ID, '__TAXONOMY_SLUG_HERE__');
        if (!empty($terms)) {
            if (isset($terms[0])) {
                update_post_meta($p->ID, 'medafi_bpm', $terms[0]->name);
            }
        }
    }
}
?>

<?php

global $wpdb;

$pp = $wpdb->get_results("SELECT ID from {$wpdb->posts} WHERE post_type='__POST_TYPE_SLUG_HERE__'");

if (!empty($pp)) {

foreach ($pp as $p) {

$terms = wp_get_post_terms($p->ID, '__TAXONOMY_SLUG_HERE__');

if (!empty($terms)) {

if (isset($terms[0])) {

update_post_meta($p->ID, 'medafi_bpm', $terms[0]->name);

}

Replace __POST_TYPE_SLUG_HERE__ to your real post slug where you want set meta data from any taxonomies terms. Replace __TAXONOMY_SLUG_HERE__ to your real taxonomy slug which terms data you are going place to meta fields.
Refresh any front page of the site if it is opened, or just open any front page
Remove inserted script from header.php/functions.php and save the file.
That is all ...

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