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Bug #79320 The "empty" function is not recognized as a callable.
Submitted: 2020-02-29 02:08 UTC Modified: 2020-02-29 03:05 UTC
From: ilya at bakhlin dot com Assigned:
Status: Not a bug Package: *General Issues
PHP Version: Irrelevant OS: Windows, GNU/Linux, macOS
Private report: No CVE-ID: None
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From: ilya at bakhlin dot com
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 [2020-02-29 02:08 UTC] ilya at bakhlin dot com 
Description:
------------
<?php

is_callable("empty") // false;

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

if (is_callable("empty")) {
    echo "It is a callable function."
} else {
    echo "It is not a callable function."
}

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 [2020-02-29 03:05 UTC] requinix@php.net
-Status: Open +Status: Not a bug
 [2020-02-29 03:05 UTC] requinix@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

https://www.php.net/manual/en/function.empty.php

empty is a language construct, not a function.
 
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