删除树枝中的重音字符

please how I can remove the accent in variable url for example Téléphone to Telephone

 <td><a href="{{ path('search_city',{'cityName':url  }) }}">{{ city }}</a></td> 

You can do that with iconv with transliteration activated.

Create a filter with

$remove_accent = new Twig_SimpleFilter('remove_accent', function ($string) {
    return iconv('UTF-8', 'US-ASCII//TRANSLIT', $string);
});

and add it to your Twig environment with

$twig = new Twig_Environment($loader);
$twig->addFilter($remove_accent); // add this

then call it in your twig file with

{{ city | remove_accent }}

Alternative method :

    <td><a href="{{ path('search_city',{'cityName':url  }) | replace({ 'á':'a', 'é':'e', 'í':'i', 'ó':'o', 'ú':'u' }) }}">{{ city }}</a></td>