Definition
PHP (Hypertext Preprocessor) is a server-side scripting language designed primarily for web development. When someone visits a PHP-powered website, the server runs the PHP code, generates the HTML, and sends the finished page to the visitor’s browser. The visitor never sees the PHP itself — they only see the result. PHP has been a foundational web language since the mid-1990s and powers a substantial share of the internet, including platforms like WordPress and frameworks like Laravel. It handles everything from rendering simple web pages to running complex e-commerce systems and SaaS applications.
Why It Matters
PHP runs on virtually every web hosting environment, which makes it one of the most accessible and cost-effective choices for web development. Its long history means there is an enormous body of documentation, community knowledge, and battle-tested code available. For business owners, this matters because PHP-based solutions are widely supported, relatively affordable to develop and host, and backed by a large talent pool. Modern PHP (version 8 and above) is significantly faster and more structured than its earlier versions, with features that rival newer languages. If your website or web application is built on WordPress, WooCommerce, or Laravel, PHP is the language powering it behind the scenes.
Example
A small business hires a developer to build a custom client portal where customers can log in, view their invoices, and download documents. The developer builds it in PHP using the Laravel framework. The hosting costs are modest because PHP runs on standard shared or cloud hosting. When the business later needs to add features — an automated invoice reminder email, a file upload section — the developer extends the existing PHP codebase rather than rebuilding from scratch, keeping costs predictable.