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The key to writing PHP code efficiently: learn to abide by writing specifications
In the process of PHP development, writing efficient code is very important, it can not only improve the code maintainability and readability, and also increase code execution efficiency. Learning to abide by writing standards is one of the keys to writing PHP code efficiently. This article will introduce some common writing conventions and provide corresponding code examples.
1. Naming conventions
Good naming conventions can make the code easier to understand and maintain. The following are some common naming conventions:
Code example:
class UserRegister { public function getUserInfo() { $user_info = array(); // 获取用户信息的代码 return $user_info; } }
2. Code indentation
Good code indentation can make the code easier to read and understand. Usually we use four spaces Or a tab character for indentation.
Code example:
function calculateSum($a, $b) { // 若a和b都大于0,则返回它们的和 if ($a > 0 && $b > 0) { return $a + $b; } // 若a和b中有一个小于等于0,则返回0 else { return 0; } }
3. Comment specifications
Appropriate comments can make the code easier to understand and maintain. The following are some common comment specifications:
Code example:
/** * 获取用户信息函数 * @param int $user_id 用户ID * @return array 用户信息数组 */ function getUserInfo($user_id) { // 根据用户ID从数据库中查询相关信息 $user_info = array(); // 具体的查询代码 return $user_info; }
4. Avoid using global variables
In PHP development, it is a good coding habit to avoid using global variables. Global variables can easily cause naming conflicts and code logic confusion, which is not conducive to code maintenance and expansion. It is recommended to encapsulate relevant variables inside a class or function and pass them through parameters.
Code example:
class User { private $user_name; public function setUserName($name) { $this->user_name = $name; } public function getUserName() { return $this->user_name; } }
5. Minimize the side effects of functions and methods
Side effects refer to changes to the external environment within a function or method, such as modifying global variables , database addition, deletion and modification operations, etc. Reducing the side effects of functions and methods can improve the maintainability and testability of your code.
Code example:
class Calculator { public function add($a, $b) { return $a + $b; } }
6. Reasonable use of namespaces
Namespaces can avoid class name conflicts and provide a clearer and readable code structure. Proper use of namespaces facilitates code maintenance and expansion.
Code example:
namespace MyProjectModel; class User { // ... }
7. Other specification recommendations
Summary:
Learning to abide by writing standards is one of the keys to writing efficient PHP code. Good naming conventions, code indentation, comment conventions, etc. can make the code easier to understand, maintain, and expand. Following these specifications and combining them with the needs of actual projects can improve the quality and reliability of the code and achieve the goal of writing PHP code efficiently.
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