Naming convention for PHP functions

PHP function naming convention: Use camel case naming: getPhoneNumber(), createUser() Length is concise: generally no more than 30 characters Use verbs: getData(), createUser(), validateInput() Avoid common terms: process( ), handle() use prefix/suffix: isValidateInput(), setUserInfo()

PHP function naming convention: clear, readable and easy to understand

In In PHP, function naming conventions are key to ensuring code readability and maintainability. Following consistent naming conventions helps developers quickly understand the purpose and usage of code. This article will introduce the naming convention of PHP functions and illustrate it through practical cases.

Function name format

PHP function name must start with a letter, underscore or backslash, and can be followed by numbers, letters or underscores. Function names are case-sensitive.

It is recommended to use "camel case naming":

• Words start with lowercase letters, and the first letter of each new word is capitalized.
• For example: getPhoneNumber(), createUser()

Function name length

The function name should be concise and to the point , reflecting the main purpose of the function. It is generally recommended not to exceed 30 characters.

Use verbs

Function names should use verbs to describe their operations. For example:

• Get data: getData()
• Create user: createUser()
• Verify input: validateInput()

Avoid generic terms

Do not use things like process(), handle(), etc. Generic terms as function names. These terms are too vague to understand what the function does.

Prefixes and suffixes

To enhance readability, you can use prefixes or suffixes to indicate functions of a specific type or purpose. For example:

• Validate function: prefix is or validate
• Get function: prefix get
• Set function: prefixset
• Private function: suffix_private

Practical case

Example 1: Get the user name

function getUserName(int $userId) : string
{
    // 代码逻辑
}

The function name follows the camel case naming method and starts with the verb get, which clearly indicates its purpose of getting the user name.

Example 2: Validate input data

function validateInputData(array $data) : bool
{
    // 代码逻辑
}

The function name uses the suffix _private to indicate that this is a private function, and uses the prefix validate indicates its main purpose.

Conclusion

Following the PHP function naming convention helps improve the readability and maintainability of the code. By using camelCase, appropriate verbs, and prefixes/suffixes, you can create clear, easy-to-understand functions.

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