What are the consequences of violating PHP function documentation guidelines?

Consequences of violating PHP function documentation specifications: Unpredictable behavior: The code cannot anticipate the behavior of the offending function, resulting in unexpected results or errors. Decreased code quality: It is difficult to read and understand, reducing code quality. Difficulty in maintenance: the implementation must be checked to understand usage, increasing maintenance costs.

Consequences of violating PHP function documentation writing specifications

PHP function documentation writing specifications ensure the consistency and maintainability of functions in use. Violating these specifications can lead to unpredictable behavior, reduced code quality, and maintenance difficulties.

Code Example: Documentation Specification Violation

// 未指定返回值类型
function my_function()
{
    // ...
}

// 未指定参数类型
function my_function2($param)
{
    // ...
}

// 未提供 @throws 注释来指定可能抛出的异常
function my_function3()
{
    // ...
    throw new Exception('My exception');
}

Consequences

Unpredictable Behavior:

• Calling code may fail Behavior of a function that is expected to violate the specification, leading to unexpected results or errors.

Decreased code quality:

• Functions that violate the specification can make the code difficult to read and understand.

Maintenance difficulties:

• The implementation of a function that violates the specification must be inspected to understand its usage, thereby increasing maintenance costs.

Practical case:

Consider a function that violates the specificationget_data():

// 未指定返回值类型
function get_data()
{
    // 获取并返回数据
    return $data;
}

When calling this function, the calling code does not know Return type, which can cause the following problems:

• Unexpected variable type: If a function returns an array but the calling code expects a string, an error or unexpected result.
• Unable to take advantage of type hints: The IDE cannot provide type hints when editing code, مما يجعل من الصعب كتابة الكود الصحيح.

Written by following the PHP function documentation With specifications, you can prevent these problems and ensure that your code is readable, maintainable, and predictable.

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