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Date: Wed, 09 Jan 2013 14:08:58 -0600
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To: Stas Malyshev <smalyshev@sugarcrm.com>
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Subject: Re: [PHP-DEV] - "attributes" rather than "annotations"
From: cpriest@zerocue.com (Clint Priest)

I was just looking into C# attributes at the time since I had used them 
in the past.

It was a loose translation to something for php from the example on this 
page:
http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.stringlengthattribute.aspx

In essence the example would be something along the lines of "$s must be 
a string with length exactly 4 and if not, trigger_error() with the 
given error message and error level.

One of the beautiful things about the C# way of attributes is that they 
can be user-defined, so long as they are written to the API for C# 
Attributes.

A similar type of thing could occur for PHP, the recent use case of 
Nullable for Type Hints would be a great use of such attributes, but 
there are dozens of other uses for them, especially if implemented in a 
way similar to C#.

On 1/9/2013 10:42 AM, Stas Malyshev wrote:
> Hi!
>
>> class a {
>>       [php:Param($s) = StringLength(4, ErrorMessage='Parameter $s length
>> cannnot exceed 4.', ErrorLevel=E_USER_ERROR)]
>>       public function foo($s) { ... ]
>> }
> What this is supposed to do?
>

-- 
-Clint