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PHP vs Radix UI

PHP logo

PHP

Web Development

A popular general-purpose scripting language that is especially suited to web development

From
Free
Rated
-
Full reviewWebsite
Radix UI logo

Radix UI

Web Development

Unstyled, accessible React component primitives

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: PHP distributed under the Modified BSD License, also called the PHP License version 4, per php.net/license/; there is no paid tier or vendor price to compare; Radix UI you write all the styling, so time to a finished interface is much longer than with a styled library
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which PHP and Radix UI actually diverge.

Attributes where PHP and Radix UI differ
AttributePHPRadix UI
Pricing modelopen-sourceOpen source, no licence fee

Identical on both: starting price (Free), free tier (Yes), platforms (Web), user rating (Not yet rated), category (Web Development).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in PHP

Nothing recorded that Radix UI does not also cover.

Only in Radix UI

  • Unstyled primitives
  • Accessibility built in
  • Composable API
  • Controlled or uncontrolled

What people use each for

The jobs each tool is most often brought in to do.

PHP

  • Server-side web developmentnot Radix UI
  • Content management systemsnot Radix UI
  • API backendsnot Radix UI

Radix UI

  • Design systems that need correct accessibility without inherited visual opinionsnot PHP
  • Replacing hand-built dropdowns and dialogs that have accessibility bugsnot PHP
  • Teams with a designer whose output should not be constrained by a library’s themenot PHP

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

PHP

  • Distributed under the Modified BSD License, also called the PHP License version 4, per php.net/license/; there is no paid tier or vendor price to compare
  • PHP 8.2 lost active support on 31 Dec 2024 and enters full end of life on 31 Dec 2026, with only security fixes since, per php.net/supported-versions.php (Aug 2026)

Radix UI

  • You write all the styling, so time to a finished interface is much longer than with a styled library
  • Composable part-based APIs are more verbose than a single component with props
  • Covers primitives rather than complex widgets, so data grids and date pickers come from elsewhere

Pricing, plan by plan

PHP

Free

No published plan breakdown. See the PHP review.

Radix UI

Free
  • Radix UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose PHP if

  • You want to start without paying.
PHP review

Choose Radix UI if

  • You need unstyled primitives.
  • You want to start without paying.
  • You also want accessibility built in.
Radix UI review

Questions people ask

Is PHP or Radix UI better?
Neither clearly leads. PHP starts at Free and Radix UI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PHP or Radix UI?
PHP starts at Free and Radix UI at Free.
Does PHP or Radix UI run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use PHP for free?
Both have a free tier, so you can try either at no cost before committing.
What is PHP best used for?
PHP is most often used for server-side web development, content management systems, api backends. Of those, server-side web development and content management systems are not what Radix UI is typically brought in for.
What can PHP do that Radix UI cannot?
Radix UI covers Unstyled primitives, Accessibility built in, Composable API, Controlled or uncontrolled.

Answered from the vendors’ own pages

PHP: Is PHP free to use?

Yes, PHP is completely free and open-source software under the PHP Foundation governance. There are no licensing fees or paid tiers.

Source
Radix UI: Is Radix UI free?

Yes, open source under the MIT licence.

PHP: Does the PHP Foundation offer paid support?

The PHP Foundation accepts voluntary donations to support long-term development, but donations are optional and not required to use PHP.

Source
Radix UI: Why use unstyled components?

Because accessibility is the hard part and visual design is the part teams want to own. Radix gives the first and stays out of the second.

Radix UI: What is the relationship with shadcn/ui?

shadcn/ui is built on Radix primitives, adding Tailwind styling and copy-paste distribution on top.

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