Why Modern PHP (8.4) Is Still a Smart Choice for Business Web Applications

PHP still powers a large share of the world’s websites — from WordPress and Laravel apps to large e-commerce and ERP platforms. Yet many decision-makers still picture the PHP of 2010. PHP 8.4 is a very different language: typed, fast, secure and pleasant to work with. This very website runs on it.

What’s new in PHP 8.4

Property hooks

Classes can define get and set logic directly on a property, removing boilerplate getters and setters while keeping validation in one place.

final class Invoice
{
    public float $total {
        set(float $value) => round($value, 2);
    }

    public string $label {
        get => "INV-{$this->number}";
    }
}

Asymmetric visibility

A property can be publicly readable but only privately writable — public private(set) string $status — which makes domain objects safer without extra methods.

A real HTML5 parser

The new Dom\HTMLDocument class parses HTML exactly like a browser does, with CSS selector support via querySelector(). That makes content sanitisation, scraping and HTML processing more reliable.

Small but welcome additions

• New array helpers: array_find(), array_any() and array_all().
• Calling methods on new objects without extra parentheses: new Report()->generate().
• The #[\Deprecated] attribute, lazy objects and stronger default password hashing cost.

Why businesses still choose PHP

Should you upgrade an older PHP application?

If your application runs on PHP 7.x or early 8.x, it is no longer receiving security updates. Upgrading usually brings an immediate performance gain and closes known vulnerabilities. A typical upgrade path involves running static analysis, fixing deprecations, updating dependencies and testing critical flows.

Webarc builds and modernises PHP applications every day. Whether you need a new web application or a legacy upgrade, we can help you get the most from modern PHP.