The AllowDynamicProperties attribute
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This attribute is used to mark classes that allow dynamic properties.
Intro
This attribute is used to mark classes that allow dynamic properties.
Note
Although attributes themselves are not inherited, the effect of the AllowDynamicProperties attribute is inherited. Child classes of a class marked with this attribute will also allow dynamic properties, even if they do not explicitly declare the attribute.
Class synopsis
#[\Attribute(\Attribute::TARGET_CLASS)] AllowDynamicProperties { }
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.
AllowDynamicProperties with non-existing property
php
<?php
class DefaultBehaviour { }
#[\AllowDynamicProperties]
class ClassAllowsDynamicProperties { }
$o1 = new DefaultBehaviour();
$o2 = new ClassAllowsDynamicProperties();
$o1->nonExistingProp = true;
$o2->nonExistingProp = true;
?>82
output
Deprecated: Creation of dynamic property DefaultBehaviour::$nonExistingProp is deprecated in file on line 10AllowDynamicProperties with non-existing property in inherited class
php
<?php
class DefaultBehaviour { }
#[\AllowDynamicProperties]
class ClassAllowsDynamicProperties { }
class InheritedClassAllowsDynamicProperties extends ClassAllowsDynamicProperties { }
$o1 = new DefaultBehaviour();
$o2 = new InheritedClassAllowsDynamicProperties();
$o1->nonExistingProp = true;
$o2->nonExistingProp = true;
?>82
output
Deprecated: Creation of dynamic property DefaultBehaviour::$nonExistingProp is deprecated in file on line 12See Also
Construct