Bug #68182 [Opn]: array("foo", "bar")() is invalid syntax

Edit report at https://bugs.php.net/bug.php?id=68182&edit=1

 ID:                 68182
 Updated by:         [email protected]
 Reported by:        [email protected]
 Summary:            array("foo", "bar")() is invalid syntax
 Status:             Open
 Type:               Bug
 Package:            PHP Language Specification
 PHP Version:        PHP-5.6
 Block user comment: N
 Private report:     N

 New Comment:

function-call-expression now has a callable-expression as the LHS, which should accurate represent what is (syntactically) allowed on the LHS.

However, this does not resolve the inaccuracy wrt array *values*.


Previous Comments:
------------------------------------------------------------------------
[2014-10-08 19:07:09] [email protected]

Yeah, the constraints doesn't mention that arrays are allowed. And

> postfix-expression must designate a function... by being a value of type
> string (but not a string literal) that contains the function's name
UVS allows literals http://3v4l.org/V6tTG

Side note: the sentence immediately after
> The number of arguments present in a function call must be at least as many
> as the number of parameters defined for that function.
should clarify that it's the number of *required* parameters.

Then at the end of the Semantics section,
> If postfix-expression is a string, this is a variable function call
which links to 13-functions.md#variable-functions that says
> If a variable name is followed by the function-call operator () (§§), and
> the value of that variable is a string containing the name of a function
> currently defined and visible, that function will be executed.
which also doesn't include arrays.

------------------------------------------------------------------------
[2014-10-08 17:24:14] [email protected]

In that case, we should change this is master to reflect it being accepted by PHP7's Uniform Variable Syntax.

------------------------------------------------------------------------
[2014-10-08 14:54:08] cmbecker69 at gmx dot de

> According to the specs, any postfix expression + argument list
> is a valid function call.

No.  While it is syntatically valid, there are further constraints:

| postfix-expression must designate a function, either by being
| its name, by being a value of type string (but not a string
| literal) that contains the function's name, or by being a variable
| whose type is Closure (§§) or a derived type thereof.

array("foo", "bar") doesn't fulfill these constraints.

------------------------------------------------------------------------
[2014-10-08 08:06:06] [email protected]

Actually it is valid syntax but you need the uniform variable syntax changes in PHP 7 to get it.
http://3v4l.org/TbcgJ

------------------------------------------------------------------------
[2014-10-08 07:47:11] [email protected]

Description:
------------
According to the specs, https://github.com/php/php-langspec/blob/master/spec/10-expressions.md#function-call-operator any postfix expression + argument list is a valid function call. 

Looking at postfix expressions https://github.com/php/php-langspec/blob/master/spec/10-expressions.md#general-3 it says array-creation-expression is a postfix expression.


Test script:
---------------
array("foo", "bar")();

Expected result:
----------------
PHP Fatal error:  Class 'foo' not found in Command line code on line 1


Actual result:
--------------
PHP Parse error:  syntax error, unexpected '(' in Command line code on line 1



------------------------------------------------------------------------



--
Edit this bug report at https://bugs.php.net/bug.php?id=68182&edit=1