PHP: AllowDynamicProperties - Manual

The AllowDynamicProperties attribute

(PHP 8 >= 8.2.0)

Class synopsis

Examples

Dynamic properties are deprecated as of PHP 8.2.0, thus using them without marking the class with this attribute will emit a deprecation notice.

<?php
class DefaultBehaviour { }

#[

\AllowDynamicProperties]
class
ClassAllowsDynamicProperties { }$o1 = new DefaultBehaviour();
$o2 = new ClassAllowsDynamicProperties();$o1->nonExistingProp = true;
$o2->nonExistingProp = true;
?>

Output of the above example in PHP 8.2:

Deprecated: Creation of dynamic property DefaultBehaviour::$nonExistingProp is deprecated in file on line 10

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