What are the best practices for naming PHP functions?

PHP function naming best practices include: using verbs or gerunds. Use descriptive names. Use lowercase and underscores to separate words. Be consistent. Consider readability.

Best Practices for Naming PHP Functions

When writing functions in PHP, choose meaningful and readable names for them Names matter. Following these best practices can help you create a code base that is easy to understand and maintain:

1. Use verbs or gerunds
Function names should reflect what the function performs or returns value. For example, a function that calculates a user's age could be named calculateAge().

2. Use descriptive names
Function names should accurately describe what the function does without having to use abbreviations or jargon. For example, instead of naming it fcn(), name it formatEmailAddress().

3. Use lowercase and underscores to separate words
Follow camel case (first letter lowercase) or underscore convention to separate multiple words. For example, formatEmailAddress or format_email_address.

4. Maintain consistency
Adhere to a consistent naming convention throughout the project. This will help make the code easier to read and understand.

5. Consider readability
Function names should be short and easy to pronounce. Avoid using lengthy or obscure names.

Practical example:

Let’s create a function to check if the email address is valid:

function isValidEmail(string $email): bool
{
    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        return false;
    }

    // 执行其他验证（例如检查是否存在 DNS 记录）

    return true;
}

In this example, the function nameisValidEmail() Follows best practices because it:

• Use the verb (isValid)
• is descriptive
• Use camel case
• Short and readable

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