concept · ▶ run · a feature idea for /dev/null

PHP, running in the log.

Every ```php block in a commit gets a Run button. PHP 8.5, compiled to WebAssembly, runs it right here in your tab. No server, no account, nothing stored.

Run the first commit Write your own

php 8.5 fetched on first use
2.5 MB gzipped
0 servers
5 s per run

Log git log --graph

How it stays safe

runtime: PHP 8.5 compiled to WebAssembly, inside a Web Worker
per run: A brand-new PHP instance, thrown away afterwards
time: 5 seconds, then the worker is terminated
memory: 128 MB hard ceiling
network: None. No sockets, URL wrappers off, and the worker has no fetch
functions: exec, proc_open, mail and friends are disabled
storage: Nothing. No cookies, no analytics, no third-party requests
sharing: Code rides in the #fragment, which browsers never send to servers
page: Strict CSP with Trusted Types, and php.wasm is checked against its SHA-384 before it runs

Keys

Move between commitsjk
Run the focused commitr
Edit its codee
Copy a link to its codey
Run while editing⌘↵
Leave the editoresc

Why

/dev/null already speaks code: highlighted blocks, commits from the terminal, git words everywhere. Running the code is the next step, a commit that proves itself.

Every test, exception and warning you see here comes from real PHP, executed on your machine.