WordPress: Obfuscate all version from css and js sources

hhdev-obfuscate-all-version-numbers-css-js.php

<?php
/**
* Plugin Name: Obfuscate all version from css and js sources
* Plugin URI: https://haha.nl/wordpress-plug-in-op-maat/
* Description: Encode version numbers from the source files so to keep files version dependant but obscure the WP version but still maintain version control on these files.
* Version: 1.0.1
* Author: herbert hoekstra - haha!
* Author URI: https://haha.nl
* Documentation URI: https://haha.nl/wordpress-plug-in-op-maat/
*/

// base 64 encode url safe version numbers
// obfuscate wp version for bots 
// =========================================

// encode and make url safe
function base64_encode_url($string) {
    return str_replace(['+','/','='], ['-','_',''], base64_encode($string));
}

// Remove version only if it comes from WP version
function hhdev_remove_ver_css_js( $src_file ) {

    $version = get_bloginfo( 'version' );
    $version_hidden = '';

    if ( strpos( $src_file, 'ver=' ) ) {

        $version_hidden = base64_encode_url($version);
      //  print_r($version_hidden);
        $src_file_clean = remove_query_arg( 'ver', $src_file );
        $src_file_new = add_query_arg('ver', $version_hidden , $src_file_clean);

        return $src_file_new;
    }

    return $src_file;
}

add_filter( 'style_loader_src', 'hhdev_remove_ver_css_js', 9999 );
add_filter( 'script_loader_src', 'hhdev_remove_ver_css_js', 9999 );

// remove more versions
// uncomment if needed
// ========================

//function hhdev_remove_version() { return ''; }
//add_filter('the_generator', 'hhdev_remove_version');

//remove_action('wp_head', 'wp_generator');

/*
 change log
 1.0.1 fixed: 'ver' was added to urls without ver defenition
 1.0.0 initial set up
 */