How to judge whether it is Java or PHP

With the continuous development of Internet technology, the development of websites and applications is becoming more and more common, and various programming languages ​​​​are gradually emerging. Among these programming languages, Java and PHP can be said to be the two most common ones. However, for newbies, it is sometimes difficult to tell whether a program is written in Java or PHP. This article will discuss how to determine which programming language a program uses.

1. File extension

First of all, the simplest way is to judge by the file extension. The file extension of Java programs is generally ".java" or ".class", while the file extension of PHP programs is generally ".php" or ".phtml". Of course, although this method of identification is simple, it can also be easily tampered with. Some developers familiar with Java or PHP will modify the file name to another extension to hide the actual language type of the program.

2. View the source code

Secondly, viewing the source code of the program is also a method of judgment, but this requires a relatively high technical level and requires certain programming experience. Programs written in Java and PHP have their own specific syntax and code structure, and the code in different programming languages ​​looks very different. If you are familiar with the syntax of Java and PHP, then looking at the code should be the most accurate way to determine the programming language of the program. Java source code usually uses a structure such as "public static void main(String[] args)", while PHP source code usually starts with "

3. Check the program running environment

In addition, the programming language of the program can also be detected based on the running environment where the program is located. Java programs need to run on the Java virtual machine, while PHP programs need to run on the Web server. When you log in to the web server, if you see that the running path of the program is based on the PHP installation directory, then the program is written in PHP. If the program runs on the Java Virtual Machine, it means it is written in Java. Of course, this method is more difficult for ordinary users.

4. Use tools

Finally, if you are not familiar with the syntax of Java and PHP or don’t have more time to understand how to judge in depth, then using some tools is also a relatively simple method. . You can use some free online tools, such as Wappalyzer for detection. It is free and requires no downloading. You only need to install the corresponding Wappalyzer extension on your browser to detect which programming language the website you are visiting is written in.

In short, the methods introduced above can be used to determine which programming language a program uses. Each method has its own specific applicable scenarios. Whether you are starting to learn programming or you need to pay attention to the language type of your program, mastering these skills is very useful.

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