What are the ways to write php+ comments?

php Comment writing methods are: 1. Single-line comments, used to add a line of comments in the code, starting with a double slash "//", followed by the content of the comment; 2. Multi-line comments, used to add a line of comments in the code Add multi-line comments to the code, ending with a slash and an asterisk "/*"Start with an asterisk and a slash"*/"; 3. Documentation comments, used to add detailed comments for functions, classes and methods, ending with a slash and two asterisks "/**), followed by an asterisk and a slash (*/"Finish.

The operating environment of this article: Windows 10 system, php8.1.3 version, dell g3 computer.

When writing code in PHP, comments are a technique used to explain the purpose and functionality of the code. They play an important role in improving code readability and maintainability. In PHP, there are three main ways to write comments, namely single-line comments, multi-line comments and document comments.

1. Single-line comments: Single-line comments are used to add a line of comments in the code. It starts with a double slash (//) followed by the content of the comment. For example:

// 这是一个单行注释

2. Multi-line comments: Multi-line comments are used to add multi-line comments in the code. It ends with a slash and an asterisk (/*&*/). Content in between will be treated as comments. For example:

/*
这是一个多行注释
可以包含多行内容
*/

3. Documentation comments: Documentation comments are used to add detailed comments to functions, classes and methods in order to generate documentation. It ends with a slash and two asterisks (/**&*/). Comment content is written in a specific format and can include parameters, return values, sample code and other information. For example:

/**
* 这是一个文档注释的示例
*
* @param string $name 用户名
* @return string 欢迎消息
*/
function welcomeMessage($name) {
return "欢迎你，" . $name . "!";
}

Using these different comment writing methods, you can add comments in the PHP code to explain the purpose of the code, parameters, return values ​​and other information. This will make it easier for other developers to understand and use your code.

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