What is more prosperous in these languages

Question

php , sql ,html , swift....

Answer 1

https://www.quora.com/Which-is-the-best-programming-language-to-learn-in-2017?page_size=10&_escaped_fragment_=n%3D18

Answer 2

All these languages are prosperous. But, they make the different things. So maybe you have to decided what do you want to programming.
swift - only for doing programs for Mac OS X a iOS (that means only for Apple compurers, tablets, smarts).
sql - as separate is not used much , but all other languages used it for access to databases. So you have to know it, beside other languages to be a proffesional programmer
html is a language for creating design of web pages. But, to be a good of this design you have to learn best too a CSS, a Javascript, frameworks, and more
php - is a language for coding the dynamically web pages on server.
Generaly, all languages, here in sololearn are prosperous, but in the different ways.