YLYankee Language

Esoteric language on PHP with unicode syntax. Unlike anything else. OOP, Fibers generators, async/await — all in.

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Syntax

GitHub

🔤

¤ § λ ⟦ ⟧

Unique unicode symbols instead of keywords. No if/else/function/fn — only ¤ ? ¿ ^ § λ.

🏛️

OOP with † inheritance

‡ Class † Parent, ⋔ method, ⇢ new, this inside body. Real classes with init, method override.

🎯

Closures and map/filter

λ (x) ⟦ ^ x * 2 ⟧ — first-class lambdas. map, filter, reduce out of the box.

⚡

Generators on Fibers

↤ value + ⇶ x = gen ⟦ ⟧ — real PHP Fibers. Not a fake, real lightweight threads.

🚀

Async / await

⚡ § fn and ⏸ await baked into the grammar. Not a library — syntax.

📦

Stdlib + JSON + HTTP

prelude, math, list, string, json, datetime, http. 40+ functions auto-loaded.

🖥️

REPL v4

:vars, :load, multiline input. A real REPL with built-in commands.

🔨

Compiler YL → PHP

ylc.php transpiles YL to valid PHP. Basic programs run natively.

🌐

Browser playground

PHP server + HTML editor. Write YL in browser, hit Run, see output.

Example

‡ Animal ⟦
    ⋔ init(name :str) ⟦
        this.name = name
    ⟧
    ⋔ sound() ⟦
        ^ "..."
    ⟧
⟧

‡ Dog † Animal ⟦
    ⋔ sound() ⟦ ^ "Woof!" ⟧
⟧

¤ rex = ⇢ Dog("Rex")
» rex.name + " says: " + rex.sound()

Output:

Rex says: Woof!

Why YL?

Unique. No language uses ¤ § λ ⟦ ⟧ ‡ ⋔ ⇢. Syntax is recognizable at first sight.
Complete. Not a 200-line toy — REPL, compiler, stdlib, playground, VSCode extension.
Modern. Fibers, async/await, generators, destructuring, gradual typing.
PHP underneath. Runs anywhere PHP 8.1+ is, no dependencies.