Req #65612 [Opn]: Calling the result of a function call as a function causes a parse error

From: Date: Thu, 05 Sep 2013 21:15:53 +0000
Subject: Req #65612 [Opn]: Calling the result of a function call as a function causes a parse error
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-181444@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=65612&edit=1

 ID:                 65612
 Updated by:         aharvey@php.net
 Reported by:        tdammers at gmail dot com
 Summary:            Calling the result of a function call as a function
                     causes a parse error
 Status:             Open
 Type:               Feature/Change Request
-Package:            Compile Failure
+Package:            Scripting Engine problem
 Operating System:   Any (debian wheezy e.a.)
 PHP Version:        Irrelevant
 Block user comment: N
 Private report:     N

 New Comment:

Relevant RFC (that never went anywhere, AFAIR): 
https://wiki.php.net/rfc/fcallfcall


Previous Comments:
------------------------------------------------------------------------
[2013-09-04 08:08:06] tdammers at gmail dot com

Description:
------------
Calling the return value from a function as a function directly (without storing the return value in
an intermediate variable) results in a parse error. Apparently, the PHP parser does not understand
foo()() or (foo())().

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

function foo($a) {
	return function ($b) use ($a) {
		print "$a, $b!\n";
	};
}

foo("Hello")("world");


Expected result:
----------------
Program prints "Hello, world!"

Actual result:
--------------
PHP Parse error:  syntax error, unexpected '(' in /home/tobias/test/test.php on line 9


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



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Edit this bug report at https://bugs.php.net/bug.php?id=65612&edit=1

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