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I want to make an application where users use their own computer together with a host, the host click ”Start” and then there shall automatically show a button on all users computers at the same time. Then the first person who click the button will win. I want this to happen in the browser, but I dont know wich technology to use. I already know PHP and mysql, but I dont know anyway to update users computers in realtime. Wich technology would be the best choice to make this happen?
The solution here is basically web sockets, likely with a pub/sub layer on top. It can be done relatively simply with a decent Javascript and server-side library. PHP isn't the ideal language for this, but it works just fine with the right tools. Ratchet is a decent PHP web socket server implementation, and Autobahn|JS a decent client-side library (note: at the time of writing the latest Autobahn|JS WAMP implementation is incompatible with the older WAMP implementation of Ratchet, use Autobahn|JS WAMP v1). Follow the Ratchet tutorial, then expand into setting up a pub/sub server as described here (you don't need the ZeroMQ components, you'll be triggering events by a publish action instead of an external ZeroMQ event).
That's a 30,000 foot overview, go forth and try it.
Pusher.com has the ideal solution for this. You can send events, listen to these events and then respond accordingly. They have a free plan which I think is way more than you will probably need. Pusher works with JavaScript and it's extremely simple to get started
I suggest reading up on the documentation at pusher.com/docs
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I want to build a server that will listen to a custom port and talk with my web application through a custom protocol. The server will have a dispatcher and workers that will undertake a task and complete it.
Is Laravel up for the job or should I go with something more specific ?
EDIT:
I would like to clarify that it's not an API. Basically a php script will run on loop in CLI mode (meaning no Apache or NGINX involved here). The script will open a socket and listen on a certain port for connections from clients. Once a client connects, the server will start some jobs and send the answer. It also involves a job queue to which the server will connect(probably a database), get the jobs and fork new processes that will complete the jobs.
EDIT:
It seems that you don't need much of a framework at all (except maybe for the database operations part. since you if you use sockets you will (probably) not use much of the framework's functionality like routing, view templating...) Depending on the complexity of your database I'd use a framework or not. If it's very complex, features like Eloqent might help... I think you should think on how much of the framework you will use and if you can only take the stuff you need trough Composer instead.
END EDIT
Should you use Laravel/PHP to build a server - it will be probably too slow for that purpose.
1) If you want to make your own server (not website or API) I'd much rather go for Node.js or something along those lines (ruby, python, C#..)
2) By "custom protocol" I assume you don't mean something different than HTTP/ TCP/IP ? Then what do you mean by a "custom protocol" ?
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Couldn't find anything about this online so I'm giving it a try here. (Not sure what to look for in google so maybe that's why I couldn't find it).
My client wants (for some strange reason) a dynamic, pure HTML5-website with no PHP at all. The webpages can be created with PHP, but after he is done, he wants it to (automatically) generate HTML5-webpages so these can be put online on a server with no PHP.
Is this at all even possible? Writing an API myself that gets the content from the server and converts it to HTML5 is not really an option due to time ...
Thanks
FYI: If what you want is a Single Page Application, you're asking the wrong question.
Seems like what your client wants is a pure HTML site because he might have the idea that pure HTML sites are better for SEO.
What do to?
Alternative 1:
Create a different server to generate pages. Either local (with vagrant) or in another remote server. Have your content generated there by using a CMS of your choice.
Periodically generate a mirror of your site using a tool like HTTrack or wget. Hand this mirror to your client.
Alternative 2:
Use a static site generator like Jekyll. Have the server run a cron task to automatically generate HTML from the changes.
Alternative 3:
Be the expert and explain to him that his ideas are probably unfounded.
Yes, you could use the HTML5 Filesystem API and Javascript to read/write from a JSON file as a backend. It's definitely not ideal, but it would satisfy your requirements.
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I'm fairly new to web development and I have only published one website before. With that website I only used some PHP and without framework. Now, I'm planning on using the laravel framework for my next, bigger, website. I'm wondering if there are differences between publishing a website when using a PHP framework? If so, what are the major differences and where can I read about it (googling has not helped me)?
You have countless options. Here are some I am aware of:
1. FTP'ing
Basically, you could just publish your site/app by FTP'ing it up to your server. The biggest issue will be the Database-changes. Here, the main influence is, whether are you able to run migrations or not? You would at least have to have ssh-access to your server with the required prerequisites installed. Otherwise, you would need to keep track of the changes in some other way, and change the db manually (which is not an good option IMO).
2. Automated deployments
There are server-deployment automation-tools, the one i know is capistrano. You can write scripts which do the deployment. These tools are also capable of running migrations, if you tell them to do so, but you would need to have ssh-access for that. Google will tell you the rest, here is a good tutorial.
2.1. Push-to-deploy
If you use SCM for your "bigger project" (which i would highly recommend), you could use push-to deploy technologies. This approarch basically uses Git-Hooks for triggering deployment-scripts. Deeployer could take care of that for you, if you do not want to develop your push-to-deploy-solution from scratch. Other alternatives are Rocketeer (Open Source) or DeployHQ (Paid)
2.2. Using laravel-taylored hosting/deployment/server-management services
Services like laravel-forge or envoyer offer zero-downtime automated deployments. I guess they are also based on push to deploy anyway. If you want to learn more about them, i recommend watching the corresponding laracasts-series (Forge, Envoyer). Be aware that they are not free.
I hope this overview gets you started. Happy deploying!
There is no difference between publishing a plain PHP website and one with a framework. Simple FTP up all your files and it will work, just remember to upload the framework files also.
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I want to implement Chat system on my website where users can interact with each other in rooms. This is my first time when I am implementing chat system.
On searching, I found that phpFreeChat is a good option but on going through its introduction I found that it doesn't use DB at all. So I am wondering, how good in its performance and how much is it flexible as compared to any DB-based approach.
Anyone who have used can please give a viewpoint whether I should go for phpFreeChat so after that I can start learning more about. The website has a huge traffic of around 3 million visits per month.
Any pull based chat system (in which the clients will have to actively contact the server to ask for updates) is hugely resource intensive. Every client will make a request every so many seconds; multiply that by the number of clients and you're very soon DDoSing your own server.
A proper system should be push based, in which every client has a persistent connection to the server and the server is able to push messages to all relevant parties in realtime. This is perfectly possible using web sockets or long poll as fallback. A pub/sub protocol like WAMP is perfect for this use, as are more specialised protocols like XMPP.
Writing to a file or database is entirely unnecessary and would only be a secondary feature for the purpose of data persistence. The server just needs to be a message broker, storage is not required.
Depends on what you need - my first chat application was also file based and it was (and still is) pretty quick, but customizing and adding new functions is a pain in the ass. If your only need is to have quick chat without complex functions, go for file based. If you need to make user rights and other complex things, go for database based system.
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In the middle of 2010, I found a class library called PHPToCLib. It ran flawlessly for over a year - I was able to implement a tremendous amount of my own, custom code into a an AIM Bot that I could run from my CMD Prompt. However, near the end of 2011, the servers stopped responding to the script. It connects to toc.oscar.aol.com on port 5190, and that hasn't been changed. I am indeed aware that AOL discontinued their TOC2 servers and that it's not possible to connect with them anymore. However, I downloaded a program called TerraIM that uses the same specifications and is somehow able to connect to them. I was wondering if there were any updates on how I could get my script to connect, and if so, what do I need to change?
Thank you in advance.
TerraIM also supports the OSCAR protocol which I assume it's defaulting to. If you are working with IM bots the absolute best way to go is to leverage libpurple. Unfortunately there is not a good PHP binding to libpurple. There are a couple python bindings. If you don't wish to migrate your code, there is an implementation that provides an HTTP interface which may be easy to integrate with depending on your use case. Alternatively, you could use thrift to comminute between your existing PHP code and the python bindings -- this would require a bit more coding than leveraging an HTTP interface. Here are some resources you may find helpful:
Python bindings:
github.com/fahhem/python-purple
github.com/Raptr/Heliotrope
HTTP interface from HTTP binding:
github.com/atamurad/http-purple
Thrift:
http://thrift.apache.org/