Req #70508 [Com]: Support ::function similar to ::class

Edit report at https://bugs.php.net/bug.php?id=70508&edit=1

 ID:                 70508
 Comment by:         andreas at dqxtech dot net
 Reported by:        andreas at dqxtech dot net
 Summary:            Support ::function similar to ::class
 Status:             Open
 Type:               Feature/Change Request
 Package:            PHP Language Specification
 Operating System:   Linux
 PHP Version:        7.0.0RC2
 Block user comment: N
 Private report:     N

 New Comment:

So far my workaround is:

/* @see C::foo() */
$callback = 'C::foo';

This allows the IDE to "Find usages". But I need to manually check that the @see and the string are identical.


Previous Comments:
------------------------------------------------------------------------
[2015-09-15 21:31:33] andreas at dqxtech dot net

Description:
------------
Classes like ReflectionFunction, ReflectionMethod, or built-in functions like array_filter() accept functions identified as strings.

This often leads to code like this, which is hard to analyse by the IDE:

$callback = '\MyVendor\MyLibraray\MyClass::foo';

For classes, I already use the ::class language construct to make this understandable to the IDE, and allow things like "Find usages", or to let the IDE tell me that the class does not exist.

I suggest to introduce a similar construct for functions and methods, ::function.

Test script:
---------------
class C {
  function fooMethod() {}
}

function fooFunction() {}

print C::fooMethod::function . "\n";
print fooFunction::function . "\n";

Expected result:
----------------
C::fooMethod
fooFunction


Actual result:
--------------
Fatal error: syntax error, unexpected T_DOUBLE_COLON


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Edit this bug report at https://bugs.php.net/bug.php?id=70508&edit=1