functionucfirst.php

<?php
namespace Bitrix\Iblock\Template\Functions;
 
class FunctionUcfirst extends FunctionBase
{
    public function calculate(array $parameters)
    {
        $value = $this->parametersToString($parameters);
 
        return mb_strtoupper(mb_substr($value, 0, 1)) . mb_substr($value, 1);
    }
}