(PHP 5 >= 5.4.0, PHP 7, PHP 8)
ReflectionFunctionAbstract::getClosureThis — クロージャ内部の $this に関連付けられたオブジェクトを返す
関数が static でないクロージャの場合に、 クロージャ内部で $this にバインドされたオブジェクトを所得します。
この関数にはパラメータはありません。
例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
?>上の例の出力は以下となります。
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"
}
例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
?>上の例の出力は以下となります。
string(1) "A"
string(1) "B"
NULL
object(ReflectionClass)#4 (1) {
["name"]=>
string(1) "A"
}
object(ReflectionClass)#4 (1) {
["name"]=>
string(1) "B"
}