Brent • 9/11/2021

PHP 8.1: readonly properties

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This technical article details the introduction of the `readonly` property keyword in PHP 8.1. It explains how this feature simplifies the creation of immutable Data Transfer Objects (DTOs) and Value Objects (VOs) by preventing property modification after construction. The author provides code examples comparing implementations in PHP 5.6, PHP 8.0 with promoted properties, and the new, cleaner PHP 8.1 syntax using `readonly`.

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#php #Php 81 #Data Transfer Objects
PHP 8.1: readonly properties

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