This will depend a lot on your needs. If you are interested in developing for WEB, PHP is a fairly easy language to learn.
If you are going to follow with PHP, I highly recommend you study some framework:
Codeigniter: High learning curve, very simple MVC and so is quite versatile. With good knowledge you can modify it to suit you better. Recommended for websites.
Cakephp: Also a famous and simple framework. It makes it possible to create simple or more complex applications. Easy to learn and has a large community.
Laravel: This is the name of the time, it is a VERY good framework, but at the same time complex for those who are learning. I recommend only when you are more familiar with PHP OO and MVC.
Zend Framework: This is undoubtedly the most complete of all. It is developed by the same team that takes care of PHP. It is a framework for robust applications. The learning curve is long, so recommend only to those who already have a certain knowledge with PHP and MVC.
About the other languages (JAVA, .NET) I can’t talk to you because I have no experience with them. But what I can tell you is that once you understand programming concepts and logic, languages become just tools for you and that’s all that matters, solving problems.
I am signaling to close because, as the first answer already says: "It is based on my opinion". This question goes a lot of people’s opinion, can have its scope reduced, making it a little more objective, but, still, languages are transient and we will never have a definitive answer in any scope. :/
– Felipe Avelar
@Lucianooliveiralima see if it is possible within what you seek to know and rephrase the question to something more specific than to take advantage of your question , for example Java programmer salary or . NET, or which is more used etc. In the sense of using a "metric" we can give better indicators than a simple opinion
– SneepS NinjA