Is it better to learn Java or PHP in 2019?

Understand Java

Java is a computer programming Language, like C, Python and other programming languages, Java is widely used. From the Android mobile apps we use every day to the application server programs of most websites or management information systems, they are all written in Java.

Advantages: JAVA is cross-platform and has many applications, such as Android, Swing, J2EE, J2ME, etc. The employment opportunities are wide and the market demand for employment is huge. Java mostly develops large-scale systems, so large enterprises often need many Java talents.

Disadvantages: JAVA has a high learning threshold (compared to PHP). You need to learn many open source frameworks and then learn to build a technical architecture. The learning cycle is long and development is more complicated. Requires team development.

Understand PHP

PHP is the abbreviation of Hypertext Preprocessor and is a computer script language (Scriptlanguages). Scripting languages ​​do not need to generate binary executable files at compile time like programming languages, but directly execute the written PHP code to achieve the effect. Like the same scripting language JavaScript, PHP is also an interpreted language, which can be directly interpreted and executed.

Advantages: PHP is mainly used for website development. Currently, many websites are developed using PHP. PHP is open source, which is what makes PHP enduring. In terms of e-commerce and communities, PHP has very mature open source codes and templates, which makes PHP extremely widely used. Famous companies using PHP include: Unilever, Philips, NTT, Cisco, Japan Airlines, Air Canada, Lufthansa, GE Marketplace, Wallstreet:Online Germany, AuctionWatch, VillageVoic, Dialpad and BMC, etc., among the top 40 websites in the world More than 20 of them were developed in PHP language.

Disadvantages: Relatively poor scalability in the later stage; substitutability

With the rapid development of nodejs, web development, which PHP is best at, has been replaced by many companies After the front-end and back-end are separated and the back-end provides interface services, the advantages of heavyweight languages ​​​​such as Java have become more prominent. When purely processing web pages, PHP will soon be replaced by node-related products. The reason is that the front-end is more friendly to js. However, PHP's own strengths cannot be fully utilized;

However, from an optimistic point of view, PHP already has a place in the market, and PHP still occupies a high share of ordinary web sites. There are also many old systems that are refactored using PHP; when I suggest architectures to some companies, I will still recommend using PHP for new projects. PHP is definitely No. 1 in terms of development efficiency; a language always has During its cooling-off period, it will always be impacted by other new languages. This is the process it has to go through;

As for saying that PHP cannot have high concurrency and big data, it is all nonsense. Big data has nothing to do with language. No, the database architecture is the key. The weakness of PHP is intensive calculation. In ordinary web sites, the bottleneck is in the data layer, so there is nothing easy to calculate. High concurrency has nothing to do with language. It depends on how you use cache and how you build a web service architecture. As for AI, the most used one now is Python, the brother of PHP. Both are interpreted languages, and Python has many class libraries for artificial intelligence.

In short, I am still optimistic about PHP in the long term. Language is a tool. Just use it to do what it can do and give full play to its capabilities.

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