PHP Manual: ReflectionFunctionAbstract::getClosureThis

Description

public function ReflectionFunctionAbstract::getClosureThis(): ?object

If the function is a non-static closure, get the object bound to $this inside the closure.

Parameters

This function has no parameters.

Return Values

Return the object instance represented by $this inside the Closure. If the function is not a closure or if it has no $this 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"
}

ReflectionFunctionAbstract::getClosureThis

Description

Parameters

Return Values

Examples

See Also