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<?xml version="1.0" encoding="utf-8"?>
<refentry xml:id="reflectionfunctionabstract.getclosurecalledclass" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>ReflectionFunctionAbstract::getClosureCalledClass</refname>
<refpurpose>Returns the class corresponding to static:: inside a closure</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="ReflectionFunctionAbstract">
<modifier>public</modifier> <type class="union"><type>ReflectionClass</type><type>null</type></type><methodname>ReflectionFunctionAbstract::getClosureCalledClass</methodname>
<void/>
</methodsynopsis>
<simpara>
Returns the class as a <classname>ReflectionClass</classname> that
corresponds to resolving the class name corresponding to <literal>static::</literal> inside the
<classname>Closure</classname>.
</simpara>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
&no.function.parameters;
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<simpara>
Returns a <classname>ReflectionClass</classname> corresponding to the class
represented by <literal>static::</literal> in the <classname>Closure</classname>.
If the function is not a closure or if it has global scope &null;
is returned instead.
</simpara>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title>
Example showcasing difference between
<methodname>ReflectionFunctionAbstract::getClosureCalledClass</methodname>,
<methodname>ReflectionFunctionAbstract::getClosureScopeClass</methodname>,
and <methodname>ReflectionFunctionAbstract::getClosureThis</methodname>
with a closure in the object context
</title>
<programlisting role="php">
<![CDATA[
<?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
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
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"
}
]]>
</screen>
</example>
<example>
<title>
Example showcasing difference between
<methodname>ReflectionFunctionAbstract::getClosureCalledClass</methodname>,
<methodname>ReflectionFunctionAbstract::getClosureScopeClass</methodname>,
and <methodname>ReflectionFunctionAbstract::getClosureThis</methodname>
with a static closure without an object context
</title>
<programlisting role="php">
<![CDATA[
<?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
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
string(1) "A"
string(1) "B"
NULL
object(ReflectionClass)#4 (1) {
["name"]=>
string(1) "A"
}
object(ReflectionClass)#4 (1) {
["name"]=>
string(1) "B"
}
]]>
</screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><methodname>ReflectionFunctionAbstract::getClosureScopeClass</methodname></member>
<member><methodname>ReflectionFunctionAbstract::getClosureThis</methodname></member>
<member><xref linkend="language.oop5.late-static-bindings" /></member>
</simplelist>
</refsect1>
</refentry>
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