(PHP 5 >= 5.3.0, PHP 7, PHP 8)
ReflectionFunctionAbstract::isClosure — Checks if closure
Checks whether the reflected function is a Closure.
This function has no parameters.
Returns true if the function is a Closure, otherwise false.
Example #1 ReflectionFunctionAbstract::isClosure() example
<?php
// Non-closure
$function1 = 'str_replace';
$reflection1 = new ReflectionFunction($function1);
var_dump($reflection1->isClosure());
// Closure
$function2 = function () {};
$reflection2 = new ReflectionFunction($function2);
var_dump($reflection2->isClosure());
?>
The above example will output:
bool(false) bool(true)