Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:84984
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: unknown (pb1.pair.com: domain birkholz.biz does not designate 144.76.185.252 as permitted sender)
Message-ID: <55066F07.80308@birkholz.biz>
Date: Mon, 16 Mar 2015 06:49:59 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0
MIME-Version: 1.0
To: internals@lists.php.net, 
 "internals@lists.php.net >> 'PHP Internals'" <internals@lists.php.net>
References: <CABBJUpfiy1BpdyZ5MJmQb3vQz9U8TkSECHCRctupV+BUG1H=fw@mail.gmail.com>
In-Reply-To: <CABBJUpfiy1BpdyZ5MJmQb3vQz9U8TkSECHCRctupV+BUG1H=fw@mail.gmail.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Subject: Re: [PHP-DEV] About declare(strict_types = 1)
From: dennis@birkholz.biz (Dennis Birkholz)

Hello Xinchen,

Am 16.03.2015 um 06:28 schrieb Xinchen Hui:
>      lib.php
>      <?php
>        declare(strict_types = 1);
>        function add(int $a, int $b) {
>        }
> 
>      <?php 
>       add($_GET['a'], $_GET['b']);
> 
>      that means, I need to add a lots of (int) while I try to call a
> function in a library which is not written by myself.

that is not right and has been discussed a thousand times over.
The declare changes the rules only for function calls in the file it is
declared in.

so:
lib.php:
<?php
	declare(strict_types = 1);
	function foo(int $a) {
	// no function call here
	}
?>
The declare here does just nothing.

<?php
	require "lib.php";
	foo("123"); // will work
?>

<?php
	declare(strict_types = 1);
	require "lib.php";
	foo("123"); // will give an error
?>

Very easy, explained a thousand times over. Bringing up the same false
arguments up again and again does really not help the discussion.

Greets
Dennis