Doc #70160 [Ver->Csd]: string with double colon is callable, but cannot be called

Edit report at https://bugs.php.net/bug.php?id=70160&edit=1 ID: 70160 Updated by: cmb@php.net Reported by: cf0hay at gmail dot com Summary: string with double colon is callable, but cannot be called -Status: Verified +Status: Closed Type: Documentation Problem Package: Variables related Operating System: * PHP Version: n/a Assigned To: cmb Block user comment: N Private report: N New Comment: This bug has been fixed in the documentation's XML sources. Since the online and downloadable versions of the documentation need some time to get updated, we would like to ask you to be a bit patient. Thank you for the report, and for helping us make our documentation better. Previous Comments: ------------------------------------------------------------------------ [2015-07-28 19:23:20] cmb@php.net Automatic comment from SVN on behalf of cmb Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=337259 Log: updated variable function documentation (fixes #70160) ------------------------------------------------------------------------ [2015-07-28 18:52:12] cmb@php.net Actually, this is not a problem regarding the callable type hint or the passing of callables (which works as expected and documented), but rather a problem regarding variable functions[1]. If you use return call_user_func($x); instead of return $x;, the script works fine. See also request #68475, which has been implemented for PHP 7, but won't be backported to PHP 5. Anyhow, the documentation of variable functions is rather incomplete, which should be changed. [1] <http://php.net/manual/en/functions.variable-functions.php> ------------------------------------------------------------------------ [2015-07-28 15:34:46] cf0hay at gmail dot com Description: ------------ callable typehint and is_callable may return true for a string with double colon, but it's not callable with parentheses. On the page http://php.net/manual/en/language.types.callable.php "As of PHP 5.2.3, it is also possible to pass 'ClassName::methodName'" Well, able to pass, but cannot use. Occurs in PHP 5.6. PHP 7.0 doesn't have this problem, it works properly. Test script: --------------- <?php namespace ns { class cls{ static function sfn(){ return 'OK'; } } } namespace { function mycallfn(callable $x){ if(is_callable($x)){ return $x(); }else{ return 'FAIL'; } } echo mycallfn(["ns\\cls", "sfn"])."\n"; echo mycallfn("ns\\cls::sfn")."\n"; } Expected result: ---------------- OK OK Actual result: -------------- OK PHP Fatal error: Call to undefined function ns\cls::sfn() on line 13 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=70160&edit=1