Type of Data Returned by a Function

[Sanders Kaufman]

I've noticed that some code analyzers comment that the type of data
returned by my functions is "unknown" in the following syntax:

function fnFooBar($aryPa rameters) {
$bRetVal = True;
return $bRetVal;
}

I *think* I can specify that by doing something like this:

function fnFooBar($aryPa rameters) bool {
$bRetVal = true;
return $bRetVal;
}

Is this correct?
If so, is there a performance gain, or is it just clean coding?

[ZeldorBlat]

Re: Type of Data Returned by a Function

On Jul 20, 6:32 pm, Sanders Kaufman <bu...@kaufman. netwrote:

I've noticed that some code analyzers comment that the type of data
returned by my functions is "unknown" in the following syntax:
>
function fnFooBar($aryPa rameters) {
$bRetVal = True;
return $bRetVal;
>
}
>
I *think* I can specify that by doing something like this:
>
function fnFooBar($aryPa rameters) bool {
$bRetVal = true;
return $bRetVal;
>
}
>
Is this correct?
If so, is there a performance gain, or is it just clean coding?

You think you can? Did you even try it? If you did you'd quickly
find that you get a syntax error.

That syntax isn't supported by PHP, and, as far as I know, there is no
way to specify the type of data returned. As such, I'm not sure what
your code analyzer expects you to do about it or why it would complain
about it in the first place.

[Toby A Inkster]

Re: Type of Data Returned by a Function

Sanders Kaufman wrote:

function fnFooBar($aryPa rameters) bool {
$bRetVal = true;
return $bRetVal;
}
>
Is this correct?

No -- PHP doesn't have any method for declaring a function's return type.
(As of PHP 5 there is a limited facility for declaring the types of
parameters a function accepts, but still nothing for the return type.)

Your "code analyzers" might be able to determine return type using a
phpDoc-style comment. (Google: phpDoc.)

--
Toby A Inkster BSc (Hons) ARCS
[Geek of HTML/SQL/Perl/PHP/Python/Apache/Linux]
[OS: Linux 2.6.12-12mdksmp, up 30 days, 5:45.]

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