Interpretation of PHP writing specifications: an essential guide to standardizing the development process

Interpretation of PHP writing specifications: an essential guide to standardizing the development process

Introduction:
In the software development process, writing specifications is very important, it can Improve code readability, maintainability, and overall quality. This article will explain the PHP writing specifications in detail and provide developers with an essential guide to standardize the development process.

1. Naming convention:

1. Class names, interface names, and namespaces must use camel case naming with the first letter capitalized.
2. Variable names, function names, and method names use all lowercase and underscore nomenclature.
3. Use all uppercase and underscore nomenclature for constant names.

Example:

class UserController {
    public function getUserInfo() {
        // 方法实现
    }
}

interface Logger {
    public function log($message);
}

namespace AppControllers;

use AppModelsUserModel;

2. Indentation and line breaks:

1. Use four spaces for indentation.
2. Use Unix newline character (
   ), do not use Windows newline character (
   ).
3. Use a blank line to separate between functions and classes, between class methods, and between code logic blocks.

Example:

class UserController {
    public function getUserInfo() {
        // 方法实现
    }

    public function updateUser($userId) {
        // 方法实现
    }
}

3. Comment specifications:

1. Use single-line comments (//) or multi-line comments (/ /) for code comments.
2. Comments should contain useful information, explaining the main functions, input and output of the code, etc.
3. Classes and methods should have standardized DocBlock comments, including detailed descriptions, parameter descriptions and return value descriptions.

Example:

/**
 * 获取用户信息
 * @param int $userId 用户ID
 * @return array 用户信息数组
 */
public function getUserInfo($userId) {
    // 方法实现
}

// 下面是一个单行注释的示例
$age = 18; // 设置用户年龄为18岁

4. Code formatting:

1. The length of each line of code should not exceed 80 characters.
2. Only write one statement per line, multiple statements are not allowed on the same line.
3. Spaces should be added on both sides of unary operators and before and after binary operators.

Example:

$name = "Tom";
$age = 18;

if ($age > 20 && $name === "Tom") {
    // 代码块
}

5. Error handling and exception capture:

1. Try to avoid using global exception capture and should use it in specific code blocks try-catch to catch exceptions.
2. Exception handling should be initiated as early as possible to avoid exception propagation.

Example:

try {
    // 可能抛出异常的代码块
} catch (Exception $e) {
    // 异常处理
}

6. Writing specifications for functions and methods:

1. A function or method should only complete one function.
2. The parameters of functions and methods must be properly verified and filtered.
3. Use appropriate comments within functions or methods for explanation and clarification.

Example:

/**
 * 计算两个数的和
 * @param int $num1 第一个数
 * @param int $num2 第二个数
 * @return int 两个数的和
 */
function add($num1, $num2) {
    if (!is_numeric($num1) || !is_numeric($num2)) {
        throw new InvalidArgumentException('Invalid argument, numbers expected');
    }

    return $num1 + $num2;
}

Conclusion:
Good writing specifications can make the code easier to read and understand, improve code quality and maintainability. When developing with PHP, following the above writing specifications will give you a better development experience. I hope this article can provide PHP developers with an essential guide to standardizing the development process.

The above is the detailed content of Interpretation of PHP writing specifications: an essential guide to standardizing the development process. For more information, please follow other related articles on the PHP Chinese website!