Python is a language that has been gaining popularity in recent years and is gathering a growing community. It's the favorite language of scientists, statisticians, computer network specialists and ... hackers. If you want to go towards Big Data, Machine Learning, Artificial Intelligence and wonder which programming language to choose, Python will be the best choice to start with.
PHP (PE_HA_PE) is a scripting programming language usually used to create websites. In PHP, content management systems, discussion forums, email applications and database clients are most often created. PHP is relatively easy to start learning.
It is the language most commonly used in embedded systems, in telecommunications, and in game device. Generally speaking, C ++ is used wherever you operate directly on hardware and performance matters. This language is used in the largest global corporations, among others: Adobe, Facebook, Amazon, Ericsson, HP, IBM, Intel, Nokia Siemens Network, all automotive. In my opinion, due to its complexity, this is the most difficult language in the list.