做一個簡短的數字，例如 1 000 - 1k 1 000 000 - 1M 等

Symfony 2.8

# AppBundle\Twig\AppExtension.php
<?php
namespace AppBundle\Twig;

class AppExtension extends \Twig_Extension
{
    /**
     * This is where one defines the filters one would to use in their twig 
     * templates
     * 
     * @return  Array
     */
    public function getFilters()
    {
        return array(
            new \Twig_SimpleFilter('shortNumber', array($this, 'shortNumber')),
        );
    }

    /**
     * Shorten the number
     * 
     * @param integer
     * @return string
     */
    public function shortNumber($number)
    {
        $k   = pow(10,3);
        $mil = pow(10,6);
        $bil = pow(10,9);

        if ($number >= $bil)
            return number_format((float)$number / $bil, 1, '.', '').'Billion';
        else if ($number >= $mil)
            return number_format((float)$number / $mil, 1, '.', '').'M';
        else if ($number >= $k)
            return number_format((float)$number / $k, 1, '.', '').'K';
        else
            return (int) $number;
    }

    /**
     * Get name
     */
    public function getName()
    {
        return 'app_extension';
    }
}

將你的副檔名新增到 services.yml

# app/config/services.yml
services:
    app.twig_extension:
        class: AppBundle\Twig\AppExtension
        public: false
        tags:
            - { name: twig.extension }

在 TWIG 中使用它

<span>{{ number|shortNumber }}</span>
e.g.
<span>{{ 1234|shortNumber }}</span> -> <span>1.2k</span>