Hi, we have already created a Chat system in PHP Laravel, Codeigniter using Ajax and Node, js (Express framework socket based chat which is faster than ajax).
just let me know where you want to add that chat system, so we make it light-weight for you using Node js technology, So no burden on an apache web server. node js server can easily handle the network request. On freelance, many developers offer you Php based chat system but it will create a burden on your web server and the result will be your server goes down because of 100% CPU usage. As an example, if you send the request in every second on the server and one get a response back, 2*60 seconds = 120 requests form one user in one minute, it's will be multiplying two if the receiver online. so 240 requests in one minute, and it's a disaster for browser and server. 240 request * 20 online users, 4800 chat requests in one minute... etc..
I can explain on chat or on call. just inbox me the details about your chat project.
I am an Experienced Full Stack Developer with both the front-end and back-end software development tasks.
I am comfortable with PHP, Codeigniter Angular Node.js, React.js, Laravel, CI, Magento, Wordpress, MEAN stack whatever would be your preferred language as we have all kind of expertise with us.
I am fully confident about my skills and my understanding about your project and I am ready to go through any test or sample task you assign prove it.
Thanks and waiting for your reply.