Is there any difference between php and java?

The difference between php and java: 1. Java is an object-oriented programming language; while PHP is a general open source scripting language. 2. PHP is mainly used in websites. It is suitable for rapid development and small and medium-sized application systems; while Java has a much wider application field, such as websites, embedded fields, financial industry servers, Android applications, etc.

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The difference between php and java

First, conceptual distinction

Java is an object-oriented programming language that is simple, object-oriented, distributed, and robust. , security, platform independence and portability, multi-threading, dynamics and other features; PHP is a general open source scripting language whose syntax absorbs the characteristics of C language, Java and Perl, which is easy to learn and widely used.

Second, distinguish from the difficulty of learning

PHP is much simpler than Java. Java has academic requirements. People with a bachelor's degree or above are more suitable to learn Java and can learn Java. The educational requirements for PHP are relatively low, and people with college, junior high and high school degrees can also learn PHP.

Third, distinguish from the application field

PHP is mainly used in websites. It is suitable for rapid development, small and medium-sized application systems, and low development costs. What is there? Changes can also be adjusted in a timely manner. The application fields of Java are much wider, because Java has a complete framework and has good stability in multi-threading and high concurrency. Therefore, Java is needed in websites, embedded fields, financial industry servers, Android applications and other fields. Develop talent.

Fourth, distinguish from the development prospects

If you want to focus on the development of the WEB field in the future, then learning PHP is enough, and Java is suitable for large-scale System, if you don’t plan to just do web, you need to learn Java. According to statistics from Zhongyouji, the average salary for PHP development in Beijing is 19,260 yuan per month and for Java development is 20,440 yuan per month. The prospects for both PHP and Java are very good.

Advantages of php

(1) Write and use

That is to say, every time only one change is completed, the user will see it immediately As a result, Java is much slower. After the code modification is completed, you need to recompile and then restart the jvm. This takes a lot of time, and restarting the jvm process will cause user response interruption.

(2) It’s fast to write things

php can be said to be very flexible. Given a requirement, as long as the later functions and user volume issues are not taken into consideration, it is quite fast. Yes, you don’t even need to organize it. Writing it directly will be very fast. Writing an add, delete, modify, and check function may only take 30-50 lines of code.

But Java is much slower. First of all, you need to think about what structure to use. Now it is basically spring. Then you need to configure various databases, filters, and servlets. Decide whether to use mybatis or It's hibernate;

Then consider the transfer between codes, then consider the transaction, and then continue to debug. It may take a few minutes to wait for a change of code, as you can imagine.

(3) The superficial thinking is clearer

What is the superficial thinking is that what you see is what is actually made.

For example, echo "hello world" is to output hello world, but java is different. You may write it in the response (Laibaoshopping), or you may write it in the model attribute, or you may return the string. , and then somehow, it flashed onto the page.

(4) Occupies less memory

php is a process-based solution and occupies quite little memory. It can be said that you can install 50 projects on one machine. Any problem, as long as the number of visits does not increase, it can be solved.

The same cannot be said for Java. Every time Java starts a project, it has to use up a lot of memory. For example, on a machine with 8g of memory, running two projects is usually enough.

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