Are PHP function documentation guidelines mandatory?

PHP function documentation writing specifications provide a standard format for recording function information, including function name and signature, description, parameter and return value description, error prompts and comment marks. This specification is intended to improve code readability and maintainability, and is strongly recommended to be followed to ensure consistency in function usage, thereby promoting code sharing and maintenance.

PHP Function Documentation Writing Specification

PHP Function Documentation Writing Specification defines a consistent and common format for recording functions and Details of its parameters, return values, and behavior. The specification is maintained by the PHP documentation team to improve code readability and maintainability.

Specification requirements

The specification requires the following information:

• Name and signature:Function name, parameter list and Return value type.
• Description: Clearly and concisely describe the behavior of the function.
• Parameter description: Describe the expected value and behavior of each parameter.
• Return value description: Describe the format and possible values ​​of the return value.
• Error message: List any errors or exceptions that may be thrown by the function.
• Comment tags: Use the @tag syntax to add additional details such as version, stability, deprecation, and other metadata.

Mandatory

PHP function documentation writing specifications are not mandatory. However, following this specification is strongly recommended as it provides clear and consistent documentation for the use of functions. This is essential for sharing and maintaining the code base.

Practical case

The following is an example of a function that is documented according to the specification:

/**
 * 计算两个数字的和
 *
 * @param int $a 第一个数字
 * @param int $b 第二个数字
 * @return int 两个数字的和
 * @throws InvalidArgumentException 如果传入的参数不是整数
 */
function add(int $a, int $b): int
{
    if (!is_int($a) || !is_int($b)) {
        throw new InvalidArgumentException('Arguments must be integers');
    }

    return $a + $b;
}

This document provides the following information according to the specification:

• Function name and signature
• Parameter description
• Return value description
• Error prompt
• Comment markers are used to specify parameters and returns Value types

Following function documentation writing conventions helps:

• Improve code readability and maintainability
• Reduce errors and misunderstandings
• Simplify team collaboration and knowledge sharing

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