PHP Apps

The Genie in the Cave of Wonders

PHP was born in 1994 when Danish-Canadian programmer Rasmus Lerdorf wrote a small set of Perl scripts to track visits to his online résumé. He called it “Personal Home Page Tools.” It spread quickly because it solved a real problem: making web pages that could react to user input and talk to databases. By 1997 it had been rewritten into a proper language engine. Today the acronym has officially been reinterpreted as PHP: Hypertext Preprocessor — a recursive acronym, which is the kind of joke only programmers find funny.

The key concept that makes PHP different from JavaScript is where it runs. JavaScript executes in your browser — you can right-click any page and read the source. PHP executes on the server, invisibly, before a single byte reaches your browser. The PHP genie does his work in what we at TNT call the Cave of Wonders, produces a finished HTML page, and delivers it. You never see the machinery. This server-side execution is what enables PHP to safely talk to databases, manage user logins, and perform operations you’d never trust a stranger’s browser to handle. PHP powers roughly 77% of all websites with a known server-side language — including WordPress, which runs about 40% of the entire web. It has been quietly running the internet for thirty years.