How can I implement WebSockets in PHP applications?

Using WebSockets in PHP

Q: Does PHP natively support WebSockets?

A: No, there is no native WebSocket object available in PHP.

Further Explanation:

To implement WebSockets in PHP, you'll need to use a third-party library. There are several available, each with its own advantages and disadvantages.

Consider the server's environment when choosing a library. PHP typically runs on Apache, Nginx, or IIS. WebSockets require persistent connections, which may not be well-supported in these environments.

Recommended Libraries:

• Apache Module: https://github.com/disconnect/apache-websocket
• Ratchet: https://github.com/cboden/Ratchet
• Wrench: https://github.com/varspool/Wrench
• PHP WebSocket: http://code.google.com/p/phpwebsocket/

These libraries run as standalone processes to overcome the limitations of Apache and IIS.

Additional Note:

IE10 supports WebSockets in Windows 8.

Alternative Option:

If a PHP solution is not feasible, consider using an Ajax push system.

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