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<ReflectionProperty::isDefaultReflectionProperty::isFinal>
^ReflectionPropertyLast updated: Mon, 26 Oct 2026

ReflectionProperty::isDynamic

(PHP 8 >= 8.4.0)

ReflectionProperty::isDynamic — Checks if property is a dynamic property

Description

public function ReflectionProperty::isDynamic(): bool

Checks whether the property was declared at run-time, or whether the property was declared at compile-time.

Parameters

This function has no parameters.

Return Values

true if the property was declared at run-time, or false if it was created at compile-time.

Examples

Example #1 ReflectionProperty::isDynamic() example

<?php

#[\AllowDynamicProperties]
class Foo {
    public $bar;
}

$o = new Foo();
$o->bar = 42;
$o->baz = 42;

$ro = new ReflectionObject($o);
var_dump($ro->getProperty('bar')->isDynamic());
var_dump($ro->getProperty('baz')->isDynamic());
?>

The above example will output:

bool(false)
bool(true)

See Also


<ReflectionProperty::isDefaultReflectionProperty::isFinal>
^ReflectionPropertyLast updated: Mon, 26 Oct 2026