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From: Dasn on 23 Feb 2010 04:28
Hello guys, I try to use 'ReflectionFunction' to retrieve the info of a
function.
For example:
<?php

$rf = new ReflectionFunction('strstr');
echo $rf;
?>
=============== output ==================

Function [ <internal:standard> function strstr ] {

- Parameters [3] {
Parameter #0 [ <required> $haystack ]
Parameter #1 [ <required> $needle ]
Parameter #2 [ <optional> $part ]
}
}

The problem is there's no 'return type' (i.e. 'string' in this example)
info about the function.

Could you tell me how to retrieve the 'return type'?
Thanks.


--
Dasn

From: shiplu on 23 Feb 2010 07:40
2010/2/23 Dasn <dasn(a)lavabit.com>:
> Hello guys, I try to use 'ReflectionFunction' to retrieve the info of a
> function.
> For example:
> <?php
>
> $rf = new ReflectionFunction('strstr');
> echo $rf;
> ?>
> =============== output ==================
>
> Function [ <internal:standard> function strstr ] {
>
>  - Parameters [3] {
>    Parameter #0 [ <required> $haystack ]
>    Parameter #1 [ <required> $needle ]
>    Parameter #2 [ <optional> $part ]
>  }
> }
>
> The problem is there's no 'return type' (i.e. 'string' in this example)
> info about the function.
>
> Could you tell me how to retrieve the 'return type'?
> Thanks.
I think PHP doesnt support it.

In ReflectionParameter class you'll see there is no parameter type too.

May be this is because PHP is loosely typed language.

--
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From: Daniel Egeberg on 23 Feb 2010 09:17
2010/2/23 Dasn <dasn(a)lavabit.com>:
> Hello guys, I try to use 'ReflectionFunction' to retrieve the info of a
> function.
> For example:
> <?php
>
> $rf = new ReflectionFunction('strstr');
> echo $rf;
> ?>
> =============== output ==================
>
> Function [ <internal:standard> function strstr ] {
>
>  - Parameters [3] {
>    Parameter #0 [ <required> $haystack ]
>    Parameter #1 [ <required> $needle ]
>    Parameter #2 [ <optional> $part ]
>  }
> }
>
> The problem is there's no 'return type' (i.e. 'string' in this example)
> info about the function.
>
> Could you tell me how to retrieve the 'return type'?
> Thanks.
>
>
> --
> Dasn

That's not possible. Consider this function:

function foo()
{
switch (rand(0, 1)) {
case 0: return 42;
case 1: return 'bar';
}
}

What should the return type be?

--
Daniel Egeberg
From: Bruno Fajardo on 23 Feb 2010 09:22
2010/2/23 Daniel Egeberg <degeberg(a)php.net>
>
> 2010/2/23 Dasn <dasn(a)lavabit.com>:
> > Hello guys, I try to use 'ReflectionFunction' to retrieve the info of a
> > function.
> > For example:
> > <?php
> >
> > $rf = new ReflectionFunction('strstr');
> > echo $rf;
> > ?>
> > =============== output ==================
> >
> > Function [ <internal:standard> function strstr ] {
> >
> >  - Parameters [3] {
> >    Parameter #0 [ <required> $haystack ]
> >    Parameter #1 [ <required> $needle ]
> >    Parameter #2 [ <optional> $part ]
> >  }
> > }
> >
> > The problem is there's no 'return type' (i.e. 'string' in this example)
> > info about the function.
> >
> > Could you tell me how to retrieve the 'return type'?
> > Thanks.
> >
> >
> > --
> > Dasn
>
> That's not possible. Consider this function:
>
> function foo()
> {
>        switch (rand(0, 1)) {
>                case 0: return 42;
>                case 1: return 'bar';
>        }
> }
>
> What should the return type be?

Mixed? http://www.php.net/manual/en/language.pseudo-types.php#language.types.mixed

>
> --
> Daniel Egeberg
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
From: tedd on 23 Feb 2010 09:31
At 3:17 PM +0100 2/23/10, Daniel Egeberg wrote:
>2010/2/23 Dasn <dasn(a)lavabit.com>:
> > Could you tell me how to retrieve the 'return type'?
>> Thanks.
>>
>>
>> --
>> Dasn
>
>That's not possible. Consider this function:
>
>function foo()
>{
> switch (rand(0, 1)) {
> case 0: return 42;
> case 1: return 'bar';
> }
>}
>
>What should the return type be?
>
>--
>Daniel Egeberg


It can be anything you want to test for -- check out:

is_int();
is_nan();
is_float();
is_long();
is_string();

IOW, is_whatever();

Cheers,

tedd

--
-------
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