What elements are required in PHP function naming?

The necessary elements for PHP function naming are: scope qualifier (optional) type prefix (optional) execution operation verb object/parameter (optional) suffix (optional)

Must-have elements in PHP function naming

In PHP, function naming follows certain conventions to ensure code readability and consistency. These conventions specify the elements that must be included in a function name:

1. Scope qualifier (optional)

• Identifies the scope of the function, e.g. : Global (::), class (::), instance (->).

2. Type prefix (optional)

• indicates the function return type, for example: get (get), set(set), get_(get), is_(check).

3. Execution operation verbs

• concisely and accurately describe the operations performed by the function, for example: create, update, delete.

4. Object/parameter (optional)

• Specify the object or parameter processed by the function, for example: forUser ,byName.

5. Suffix (optional)

• Provides other information about the function, for example: _once (executed only once ), _async (asynchronous execution).

Practical case: Obtain user ID and process it according to its user group

function getUserID(string $username): int
{
    // 获取用户 ID
    return 123;
}

function processUserByGroup(int $userID): void
{
    // 根据用户组处理
}

Name analysis:

• getUserID: scope qualifier (get), execution verb (User), suffix (ID).
• processUserByGroup: Execute operation verb (process), object (User), parameter (Group).

By following these naming conventions, PHP function names become clear, concise, and easy to read and understand.

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