Doc #80032 [Fbk->NoF]: Can't use valid callback as default value for callable parameters
| From: | php-bugs at lists dot php dot net | Date: | Sun, 11 Oct 2020 04:22:15 +0000 |
| Subject: | Doc #80032 [Fbk->NoF]: Can't use valid callback as default value for callable parameters | ||
| References: | 1 | Groups: | php.doc.bugs |
| Request: | Send a blank email to doc-bugs+get-17986@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=80032&edit=1
ID: 80032
Updated by: php-bugs@lists.php.net
Reported by: antonfedonyuk at gmail dot com
Summary: Can't use valid callback as default value for callable
parameters
-Status: Feedback
+Status: No Feedback
Type: Documentation Problem
Package: *General Issues
Operating System: Any
PHP Version: 7.4.9
Assigned To: cmb
Private report: N
New Comment:
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
Previous Comments:
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[2020-09-30 15:47:55] cmb@php.net
> iterable not scalar too
Well, the documentation mentions after the scalar examples:
| PHP also allows the use of arrays and the special type NULL as
| default values, [â¦]
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[2020-09-30 15:37:04] antonfedonyuk at gmail dot com
cmb@php.net iterable not scalar too
------------------------------------------------------------------------
[2020-09-30 12:19:28] cmb@php.net
The manual states[1]:
| A function may define C++-style default values for scalar
| arguments as follows:
Since callables are not scalar, is there anything to add?
[1] <https://www.php.net/manual/en/functions.arguments.php#functions.arguments.default>
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[2020-08-28 19:16:11] antonfedonyuk at gmail dot com
Description:
------------
Can't use valid callback(string or array) as default value of callable parameters. It's
generate fatal error: Default value for parameters with callable type can only be NULL. The guide
doesn't contain any notes on this issue.
Test script:
---------------
<?php
function test(callable $callback = 'strtoupper')
{
return $callback();
}
?>
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--
Edit this bug report at https://bugs.php.net/bug.php?id=80032&edit=1