Interpret the details of PHP code specifications

Interpretation of the details of PHP code specifications

As the PHP language becomes more and more widely used, good code specifications have become particularly important. By adhering to code specifications, we can improve the readability, maintainability, and scalability of the code, thereby improving development efficiency and code quality. This article will explain some details of PHP code specifications and attach code examples.

1. Indentation and Space Characters

   • Use 4 spaces for indentation instead of tabs.
   • Add a space character before and after the operator and after the comma to increase the readability of the code.

Sample code:

function add($a, $b) {
    return $a + $b;
}

2. Code line length

   • Keep the code line length at 80 Within characters to avoid overly long lines of code.
   • If a statement exceeds 80 characters, it can be separated by newline characters and appropriately indented on the next line.

Sample code:

$result = add($a, $b) +
          add($c, $d) +
          add($e, $f);

3. Naming convention

   • Use meaningful variable names and functions Names and class names, avoid using names that are too short or too complex.
   • Variable names use camel case naming (for example: $myVariable).
   • Use large camel case naming for function names and class names (for example: getUserInfo).

Sample code:

function getUserInfo($userId) {
    // 获取用户信息的业务逻辑
}

4. Comment specification

   • Add necessary comments in the code, Explain the functionality, usage, and caveats of the code.
   • Comments are wrapped in English "/" "/" and are used for multi-line comments.

Sample code:

/**
 * 获取用户信息
 * @param int $userId 用户ID
 * @return array 用户信息数组
 */
function getUserInfo($userId) {
    // 获取用户信息的业务逻辑
}

5. Deeply nested and complex logic

   • Avoid excessive Deeply nested and complex logical judgments.
   • Try to disassemble and encapsulate complex logic, and control the number of lines of a single function or method within 20 lines to improve the readability and maintainability of the code.

Sample code:

if ($condition1) {
    if ($condition2) {
        if ($condition3) {
            // 执行的业务逻辑
        }
    }
}

Optimized sample code:

if (!checkConditions($condition1, $condition2, $condition3)) {
    return;
}

// 执行的业务逻辑

By following the above code specifications, we can write the structure Clear, easy-to-maintain PHP code. Good coding standards are not only beneficial to individual developers, but also of great significance to team collaboration and the sustainable development of projects. I hope this article can help you better understand and apply the details of PHP code specifications.

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