ReflectionFunctionAbstract::getClosureCalledClass

(PHP 8 >= 8.0.23, PHP 8 >= 8.1.11)

ReflectionFunctionAbstract::getClosureCalledClass — Returns the class corresponding to static:: inside a closure

Description

public ReflectionFunctionAbstract::getClosureCalledClass(): ?ReflectionClass

Returns the class as a ReflectionClass that corresponds to resolving the class name corresponding to static:: inside the Closure.

Parameters

This function has no parameters.

Return Values

Returns a ReflectionClass corresponding to the class represented by static:: in the Closure. If the function is not a closure or if it has global scope null is returned instead.

Examples

Example #1 Example showcasing difference between ReflectionFunctionAbstract::getClosureCalledClass(), ReflectionFunctionAbstract::getClosureScopeClass(), and ReflectionFunctionAbstract::getClosureThis() with a closure in the object context

<?php

class A
{
    public function getClosure()
    {
        var_dump(self::class, static::class);

        return function() {};
    }
}

class B extends A {}

$b = new B();
$c = $b->getClosure();
$r = new ReflectionFunction($c);

var_dump($r->getClosureThis()); / $this === $b, since a non-static closure take the object context
var_dump($r->getClosureScopeClass()); / Corresponds to the self::class resolution inside a closure
var_dump($r->getClosureCalledClass()); / Corresponds to the static::class resolution inside a closure

?>

The above example will output:

string(1) "A"
string(1) "B"
object(B)#1 (0) {
}
object(ReflectionClass)#4 (1) {
  ["name"]=>
  string(1) "A"
}
object(ReflectionClass)#4 (1) {
  ["name"]=>
  string(1) "B"
}

Example #2 Example showcasing difference between ReflectionFunctionAbstract::getClosureCalledClass(), ReflectionFunctionAbstract::getClosureScopeClass(), and ReflectionFunctionAbstract::getClosureThis() with a static closure without an object context

<?php

class A
{
    public function getClosure()
    {
        var_dump(self::class, static::class);

        return static function() {};
    }
}

class B extends A {}

$b = new B();
$c = $b->getClosure();
$r = new ReflectionFunction($c);

var_dump($r->getClosureThis()); / NULL, since the pseudo-variable $this is not available in a static context
var_dump($r->getClosureScopeClass()); / Corresponds to the self::class resolution inside a closure
var_dump($r->getClosureCalledClass()); / Corresponds to the static::class resolution inside a closure

?>

The above example will output:

string(1) "A"
string(1) "B"
NULL
object(ReflectionClass)#4 (1) {
  ["name"]=>
  string(1) "A"
}
object(ReflectionClass)#4 (1) {
  ["name"]=>
  string(1) "B"
}

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