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Bug #71416 Reflection for ReflectionMethod::invoke considers second parameter as required
Submitted: 2016-01-19 20:36 UTC Modified: 2019-02-10 16:33 UTC
Votes:2
Avg. Score:4.5 ± 0.5
Reproduced:2 of 2 (100.0%)
Same Version:1 (50.0%)
Same OS:1 (50.0%)
From: ondrej at mirtes dot cz Assigned: carusogabriel (profile)
Status: Closed Package: Reflection related
PHP Version: Next major version OS: all
Private report: No CVE-ID: None
View Developer Edit
 [2016-01-19 20:36 UTC] ondrej at mirtes dot cz 
Description:
------------
ReflectionMethod::invoke accepts one required parameter (the object) and then zero or more parameters that should be passed to the invoked method as stated in the documentation: https://secure.php.net/manual/en/reflectionmethod.invoke.php

But the reported parameters by reflection are not consistent with that. It does not consider the second parameter as variadic and it considers it as required.

I expect the second parameter to be reported as optional and as variadic.

Test script:
---------------
<?php

$ref = new ReflectionClass('ReflectionMethod');
foreach ($ref->getMethod('invoke')->getParameters() as $parameter) {
    var_dump($parameter->getName());
    var_dump($parameter->isOptional());
    var_dump($parameter->isVariadic());
    var_dump('---');
}

Expected result:
----------------
string(6) "object"
bool(false)
bool(false)
string(3) "---"
string(4) "args"
bool(true)
bool(true)
string(3) "---"

Actual result:
--------------
string(6) "object"
bool(false)
bool(false)
string(3) "---"
string(4) "args"
bool(false)
bool(false)
string(3) "---"

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 [2016-01-19 20:37 UTC] ondrej at mirtes dot cz 
The test script has run here: https://3v4l.org/PXYvm
 [2016-02-02 11:57 UTC] krakjoe@php.net
-Status: Open +Status: Not a bug
 [2016-02-02 11:57 UTC] krakjoe@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

You appear to be looking at the HHVM output, the PHP output is consistent across all the versions we care about.
 [2016-02-02 12:06 UTC] ondrej at mirtes dot cz 
I still think it's a bug, because the PHP reflection (in versions from 5.6.0 to 7.0.2) returns that the second parameter is not optional (so it's required) and that it's not variadic.

But according to the documentation of the method (https://secure.php.net/manual/en/reflectionmethod.invoke.php), it can be invoked with only just one parameter - the object.

As the method can be invoked with 1 to infinite number of parameters, I think the reflection of this method reports wrong information.

I already reported two inconsistencies in PHP reflection (https://bugs.php.net/bug.php?id=71077, https://bugs.php.net/bug.php?id=70960) which were acknowledged and fixed so I think this case is another of such inconsistencies.
 [2016-02-03 08:07 UTC] a at b dot c dot de 
The HipHop Virtual Machine is a Facebook product, not something built by php.net. It's not the place of the official PHP manual to describe differences in third-party implementations/variants.
 [2016-02-03 08:15 UTC] ondrej at mirtes dot cz 
I am not talking about HHVM at all. I am comparing PHP documentation and the current production behaviour to what PHP reflection reports. I haven't mentioned HHVM even once.
 [2016-12-22 17:46 UTC] rquadling@php.net 
The reflection of the ReflectionMethod::invoke is certainly NOT in keeping with the documentation.

Running:

php --rc ReflectionMethod

and then looking at the invoke() method shows ...

    Method [ <internal:Reflection> public method invoke ] {

      - Parameters [2] {
        Parameter #0 [ <required> $object ]
        Parameter #1 [ <required> $args ]
      }
    }

Not HHVM. Not any PHP script. Just PHP.
 [2016-12-22 17:51 UTC] rquadling@php.net
-Status: Not a bug +Status: Open
 [2016-12-22 17:51 UTC] rquadling@php.net 
Reopening.
 [2017-04-14 09:26 UTC] cmb@php.net
-Status: Open +Status: Analyzed
 [2017-04-14 09:26 UTC] cmb@php.net 
The arginfo[1] is obviously wrong. We need
ZEND_BEGIN_ARG_INFO_EX() here.

[1] <https://github.com/php/php-src/blob/php-7.1.4/ext/reflection/php_reflection.c#L6421-L6424>
 [2018-02-23 18:58 UTC] cmb@php.net 
Related To: Bug #74421
 [2018-09-21 05:39 UTC] carusogabriel@php.net
-PHP Version: Irrelevant +PHP Version: Next major version -Assigned To: +Assigned To: carusogabriel
 [2018-09-21 05:39 UTC] carusogabriel@php.net 
This is only taking place in our next major version, as discussed in https://github.com/php/php-src/pull/3443
 [2018-09-21 05:40 UTC] carusogabriel@php.net
-Status: Analyzed +Status: Assigned
 [2019-02-10 16:33 UTC] carusogabriel@php.net
-Status: Assigned +Status: Closed
 [2019-02-10 16:33 UTC] carusogabriel@php.net 
This was fixed and will be available at PHP 8.0

http://git.php.net/?p=php-src.git;a=commit;h=35db1ccdd
 
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