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Vendor initphp
Package socket
Short Description Lightweight TCP, UDP, TLS and SSL socket server/client toolkit for PHP 8.1+.
License MIT

Keywords stream client tcp server Socket udp networking ssl tls initphp

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Informations about the package socket

initphp/socket

A lightweight TCP, UDP, TLS and SSL socket toolkit for PHP 8.1+. Both server and client sides share a clean, typed API built around enums and a small Channel strategy so each transport plugs in without switch ladders.

Requirements

PHP 8.1+
ext-sockets
ext-openssl (TLS / SSL)
ext-pcntl (only for the integration test suite)

Installation

Features

TCP, UDP, TLS, SSL — one factory, one interface per side.
Non-blocking, select-driven server loop — live() runs forever, or drive the loop yourself one iteration at a time with tick() (great for embedding into your own event loop or for deterministic tests).
First-class enums — Transport, Domain and CryptoMethod replace magic strings and integer flags.
Strategy-based channels — TcpChannel, UdpChannel and StreamChannel isolate the transport-specific I/O. No static state shared between server instances.
Coherent exception hierarchy — every exception implements SocketExceptionInterface, so a single catch covers the package.
Typed everywhere — PHP 8.1 enums, readonly promoted properties, full declare(strict_types=1) coverage.
No silent data loss — liveness checks never consume data from the wire.

Quick start

TCP echo server

TCP client

TLS server (chat-style with named clients)

SSL client (talking to Gmail SMTP)

API surface

Factory — `InitPHP\Socket\Socket`

Servers — `InitPHP\Socket\Interfaces\SocketServerInterface`

Method	Purpose
`listen(): static`	Bind and start listening. Does not accept clients.
`live(callable $cb, float $idle = 0.05): void`	Run the accept/dispatch loop until `stop()` is called.
`tick(callable $cb, float $wait = 0.0): int`	One iteration of the loop. Returns events processed.
`stop(): void`	Cooperatively exit the loop started by `live()`.
`close(): bool`	Tear everything down (every client + the listening socket).
`broadcast(string $msg, int\\|string\\|array\\|null $ids = null): bool`	Send to all clients or a targeted subset.
`register(int\\|string $id, SocketConnectionInterface $conn): bool`	Attach an addressable id to a connection.
`getClients(): array`	Map of `id\|key → connection`.

AbstractStreamServer (TLS / SSL) additionally exposes:

Clients — `InitPHP\Socket\Interfaces\SocketClientInterface`

Method	Purpose
`connect(): static`	Open the connection.
`disconnect(): bool`	Close the connection. Idempotent.
`read(int $len = 1024): ?string`	Receive up to `$len` bytes. Returns `null` on no data / failure.
`write(string $data): ?int`	Send `$data`. Returns the number of bytes written, or `null` on failure.

AbstractStreamClient (TLS / SSL) adds option(), timeout(), blocking() and crypto() — same shape as the server side.

Enums

Exceptions

Every package exception implements SocketExceptionInterface, so a single catch (SocketExceptionInterface $e) covers them all.

Embedding into your own event loop

If you already run an event loop (ReactPHP, Amp, Swoole-bridge, etc.), do not call live() — invoke tick() from your loop and let the host decide when to yield:

Documentation

In-depth guides live under docs/:

Getting started
Architecture
Servers: SSL
Clients: SSL
Cookbook: SMTP client
Migrating from 1.x

Development

CI runs the full QA pipeline on PHP 8.1, 8.2 and 8.3.

Contributing

Issues, ideas and pull requests are welcome. Please read the org-wide contributing guide before opening a PR.

Security issues should be reported privately — see SECURITY.md.

Credits

Muhammet ŞAFAK — <[email protected]>

License

Released under the MIT License.

All versions of socket with dependencies

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Package Version

Version 2.0.0 Release 24. May 2026
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Requires php Version ^8.1
ext-sockets Version *
ext-openssl Version *

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