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Date: Mon, 02 Feb 2015 22:17:25 +0100
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To: Thomas Bley <mails@thomasbley.de>, dmitry@zend.com
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Subject: Re: [PHP-DEV] What do we need strict scalar type hints for?
From: cmbecker69@gmx.de (Christoph Becker)

Thomas Bley wrote:

> Here is a typical billing example which uses exceptions:
> 
> <?php
> ini_set('error_reporting', E_ALL);
> ini_set('display_errors', 1);
> 
> addVat('apples');
> 
> function addVat($amount) {
>   if (!is_int($amount) && !is_float($amount)) {
>     throw new InvalidArgumentException('Argument 1 passed to '.__FUNCTION__.' must be of the type int|float, '.gettype($amount).' given');
>   }
>   return round($amount*1.19, 2);
> }
> 
> Instead of multiple strict scalar hints (e.g. function addVat(int|float $amount){...}), I would prefer to have "numeric" as strict type:
> function addVat(numeric $amount){...}

Have you considered

  addVat(-1);

-- 
Christoph M. Becker