ReflectionProperty
PHP Manual

ReflectionProperty::isFinal

Determines if this property is final or not

Description

public bool ReflectionProperty::isFinal()
Warning

This function is currently not documented; only its argument list is available.

Returns whether the property is final. If the property is marked private(set), then it will also be implicitly final.

Parameters

This function has no parameters.

Return Values

Returns true if the property is explicitly marked final, or if it is implicitly final due to being private(set). Returns false otherwise.

Examples

Example #1 ReflectionProperty::isFinal example

<?php
class Example
{
    public string $name;

    final protected int $age;

    public private(set) string $job;
}

$rClass = new \ReflectionClass(Example::class);

var_dump($rClass->getProperty('name')->isFinal());
var_dump($rClass->getProperty('age')->isFinal());
var_dump($rClass->getProperty('job')->isFinal());
?>

The above example will output:

bool(false)
bool(true)
bool(true)