Property Hook

Property hooks are a feature of PHP 8.4, where accessors can be defined with the property.

Hooks are for ‘set’ and ‘get’: they allow extra commands to be always executed at setting or getting time of a property.

Hooks look like the magic methods __set and __get, with a few differences: they are dedicated to a property, and easier to write.

<?php

class X
{
    public string $property {
     // this is the single line definition of a hook
     // the expression is the returned value
        get => $this->property . _1;

        set {
             // $value is the unique parameter of that function
            $this->property = $value;
        }
    }
}
?>

See also PHP 8.4 Property Hooks, PHP 8.4 Property Hooks: The Ultimate Guide for Developers, PHP RFC: Property hook improvements

Related : Properties, __get() Method, __set() Method, Magic Methods