Best Practices for PHP Functions: Naming Conventions and Documentation?

PHP function best practices include naming conventions and documentation. Naming conventions follow lowercase letters and underscores, start with a verb, and be descriptive. PHPDoc annotations are used in documentation, including @param (parameters), @return (return value), and @throws (exception) annotations. These practices improve consistency, readability, maintainability, and code completion.

Best Practices for PHP Functions: Naming Conventions and Documentation

Naming Conventions

• Use lowercase letters and underscores:my_function
• ##Verb beginning:create_user
• Descriptive:calculate_shipping_cost
• Avoid abbreviations:Useuser_idinstead ofuid

Documentation

PHPDoc Comments

• Summary:With the @ symbol Begins, followed by the function name
• Parameters:Starts with @param, followed by parameter type and description
• Return value:Starts with @return, followed by Return value type and description
• Exception:Start with @throws, followed by the exception type and description that may be thrown

Example:

/** * 计算商品的总重量 * * @param array $items 商品列表（包含重量信息） * @return float 总重量（单位：千克） * @throws InvalidArgumentException 如果商品列表为空 */ function calculate_total_weight(array $items): float { // ...代码... }

Practical case

User registration function

/** * 注册新用户 * * @param string $username 用户名 * @param string $password 密码 * @param string $email 邮箱 * @return int 新创建用户的 ID * @throws InvalidArgumentException 如果输入无效 */ function register_user(string $username, string $password, string $email): int { // ...代码... }

Usage method:

$user_id = register_user('john', 'password', 'john@example.com');

Advantages

• Consistency and readability:The naming convention ensures that functions are named consistently, making them easier to read and understand.
• Better code maintainability:Documentation provides information on the function and usage of the function, making it easy to maintain and debug.
• Code completion:Modern IDEs and code editors automatically complete function names and parameters in PHPDoc, simplifying the coding process.

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