is_callable
reactphp/async
Supported Versions: PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8
Verify that a value can be called as a function from the current scope.
<?php is_callable
(
mixed $value
,
bool $syntax_only
=
false
,
string
&
$callable_name
=
null
):
bool
