And in connection with this id would like to go to the mobile application ... So, +1 Java.
How is this +1 for Java? We are talking about server languages .. you are not using your server on the phone? Of course, you can use Java to create applications in addition to launching your site, but that's another story.
The time spent learning a language is not a problem ... I just would like to know which is the most profitable at the end of the entire training.
None of the languages will make your site more profitable, but you may be more in demand in different companies depending on what you know.
And on a small note. Can Javascript work with Java? And what is the real advantage of this?
Well ... yes, but that is an almost pointless question. You use Java or PHP to create HTML code that is sent to the client, and then your JavaScript manipulates this. This is completely unrelated to the language you use on the server side.
@comment: I can’t say it is worth learning more. I believe that Java is more universal in that it has more applications off the Internet. PHP is supported by more web servers (AFAIK), so you will not have problems if you need to work on another server.
I cannot honestly recommend one by one. I used only PHP for the web and Java for non-web. I like PHP because it is easy to select, easy to use, and all sorts of things are built into the language without any inclusions or anything else. It has a large community, so there are many scripts that you can download. One could argue that this is also a mess of the language, but as long as you are not all upset about this, this is not a problem. Java OTH ... I do not know. I am not Java keener, all I say :)
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