What is the naming convention for PHP functions?

PHP function naming rules: use lowercase letters and underscores (for example: get_user()), avoid special characters or numbers, keep names short and descriptive, use specific prefixes based on return values ​​or functions (for example: is_logged_in(), save_user ()), provide descriptive names for parameters.

PHP Function Naming Convention

In PHP, it is very important to follow proper function naming convention as it can improve the efficiency of your code. Readability and maintainability. The following are some common PHP function naming rules:

• Use lowercase letters and underscores as function names, for example: get_user()
• Avoid in function names Use special characters or numbers, for example: $get_user_1()
• Function names should be short and descriptive, conveying the purpose of the function as clearly as possible
• If the function returns a Boolean value, the function name should start with "is", "has" or "can", for example: is_logged_in()
• If the function modifies a variable, the function name should start with a verb , for example: save_user()
• If the function accepts multiple parameters, the parameter names should be different and descriptive

##Practical combat Example:

<?php

// 返回用户的登录状态
function is_logged_in($user) {
  // 检查用户是否登录
  if ($user['is_logged_in']) {
    return true;
  } else {
    return false;
  }
}

// 保存用户的个人资料
function save_profile($profile) {
  // 将个人资料保存到数据库中
  // ...

  // 返回保存结果
  return true;
}

?>

Other tips:

Consider using camel case, where the first letter of each word is capitalized, for example:
• getUserName ()
Keep function names consistent with documentation and comments
• Use a code generator or tool such as PHPStan to check that function names follow convention

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