Format the decimals according to wc_format_decimal()

wc-format-decimal-tester.php

<?php
/**
 * Plugin Name: WooCommerce Format Decimal Tester
 * Plugin URI: https://gist.github.com/BFTrick/02653b97fc3351fc3606
 * Description: Test the wc_format_decimal() function.
 * Author: Patrick Rauland
 * Author URI: http://speakinginbytes.com/
 * Version: 1.0
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */

if ( ! class_exists( 'WC_Format_Decimal_Tester' ) ) :

class WC_Format_Decimal_Tester {

    /**
     * Initialize the plugin.
     *
     * @since 1.0
     */
    public function __construct() {
        add_action( 'plugins_loaded', array( $this, 'test' ) );
    }

    public function test() {
        if ( class_exists( 'WooCommerce' ) && function_exists( 'wc_format_decimal' ) ) {
            $numbers = array('2', '2.0', '2.2', '2.200', '2,2', '2,200');
            foreach( $numbers as $key => $number ) {
                echo $number . " after wc_format_decimal() is: " . wc_format_decimal( $number, '', true );
                echo "<br/>";
            }
        }
    }

}

$WC_Format_Decimal_Tester = new WC_Format_Decimal_Tester( __FILE__ );

endif;