How to detect an instance of an anonymous class?

Question

How can we know if an $instance is an instance of an anonymous class?

Out of interest, what are you using Anonymous Classes for? They're pretty interesting, and cool; but (outside of a few specialist libraries) I've not seen any use-cases where they're particularly useful — Mark Baker, Jun 08 '16 at 10:54
@MarkBaker I need to create an object in a callback quickly and it must implement a certain interface ;-) — wpclevel, Jun 08 '16 at 11:06

Mark Baker · Accepted Answer · 2016-06-08T10:52:34.463

12

$instance = new class {};

$testInstance = new ReflectionClass($instance);
var_dump($testInstance->isAnonymous());

EDIT

Of course, given that you must be running PHP7 for anonymous classes anyway, wrap it up into a one-liner

var_dump((new ReflectionClass($instance))->isAnonymous());

edited Jun 08 '16 at 10:52

answered Jun 08 '16 at 10:47

Mark Baker

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score 0 · Answer 2 · answered Jun 08 '16 at 10:57

You can try this one: Here

<?php 
class TestClass {}
$anonClass = new class {};

$normalClass = new ReflectionClass('TestClass');
$anonClass  = new ReflectionClass($anonClass);

var_dump($normalClass->isAnonymous());
var_dump($anonClass->isAnonymous());
?>

Output:

bool(false) bool(true)

How to detect an instance of an anonymous class?

2 Answers2