Can mobile apps be created using PHP?

I was wondering given the learning curve of PHP, it would be really helpful if we can create better and performant mobile apps using PHP. Is it possible today? Has anyone done it?

How big (in size) can a CSS file be? What should be the upper limit?

I am working on a project right now and the main CSS file (Combined + minified) is already more than 700kb. I am wondering if it is an OK size. What would you recommend?

Why do you love Elm programming language?

What are the best Sass based Grid systems?

I am looking for sensible, minimalistic and customisable Sass based grid system / framework / library. Please advice.

How to rollout features to only a certain section of users?

I have been adding features to my web app but I want to release it to only selected users, how should I do it? I have hack-ish ideas like white listing certain users and allow only these users to access it, but I can afford to do it because my user b...

What are web hooks and how does it work?

Can someone explain what exactly is web hook and how does it work? What are its use cases?

Do you believe designing by coding is the best way to design a web product?

I personally believe designing by actually writing HTML and CSS is better than creating photoshop mocks. What do you think?

What's the best way to start learning Aurelia if coming from an Angular/React background?

Since @EisenbergEffect is here, would love to know his thoughts. I am sure a lot of developers will find it useful. Also it'll be great to see Rob as a mentor of Aurelia node on Hashnode. I am not sure who to contact for that. I can see there are a

What's the importance of unit testing in CSS?

Do you unit test your CSS? I recently came across few libraries that let you unit test CSS. My question : is it mainstream and common among UI developers to unit test stylesheets?

What kind of deployment pipeline is used by big tech companies to deploy code without breaking anything?

Companies like Facebook, Google, Quora, PayPal etc have huge codebase. I agree they must be having good test coverage, but how do they make sure that everything works as expected after each deployment? What does the deployment pipeline look like?