Bug #68625 [Com]: By-ref parameters with array/callable typehints should be permitted

Edit report at https://bugs.php.net/bug.php?id=68625&edit=1 ID: 68625 Comment by: levim@php.net Reported by: ajf at ajf dot me Summary: By-ref parameters with array/callable typehints should be permitted Status: Open Type: Bug Package: PHP Language Specification PHP Version: 5.6.4 Block user comment: N Private report: N New Comment: I'm not sure that taking a callable by reference has any kind of logical sense to it. Taking arrays by reference is definitely valid, though. Previous Comments: ------------------------------------------------------------------------ [2014-12-19 03:11:53] ajf at ajf dot me Description: ------------ The language spec states this in spec/13-functions.md: *parameter-declaration* must not contain & if *type-hint* is array or callable. Yet PHP allows this: $ php -r 'function a(array &$foo) {} $a = []; a($a);' $ php -r 'function a(callable &$foo) {} $a = "strlen"; a($a);' $ Why, then, is it prohibited in the spec? ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=68625&edit=1