How to understand the latest PHP code specification changes?

How to understand the latest PHP code specification changes?

1. Introduction

PHP is a widely used programming language that plays an important role in Web development. In order to improve the readability and maintainability of code, the PHP community continuously works hard to formulate and update code specifications. Recently, PHP coding specifications have undergone some changes, and this article will introduce how to understand these latest changes.

2. Changes in naming rules

In the latest PHP code specifications, some adjustments have been made to the naming rules. In the past, underscore-separated naming was common, but now camelCase is preferred. CamelCase notation is more in line with the style of modern programming languages ​​and is easier to understand when reading code.

The following is the sample code:

<?php
class Car {
    private $engineType;
    private $modelNumber;
    
    public function setEngineType($engineType) {
        $this->engineType = $engineType;
    }
    
    public function setModelNumber($modelNumber) {
        $this->modelNumber = $modelNumber;
    }
    
    public function getEngineType() {
        return $this->engineType;
    }
    
    public function getModelNumber() {
        return $this->modelNumber;
    }
}
?>

In the above example, we used camel case naming to name the properties and methods of the class. Doing this makes our code easier to read and understand.

3. Changes in Space and Indentation Specifications

In addition to changes in naming rules, the latest PHP code specifications also make some adjustments to spaces and indentation. In the past, it was common practice to use 4 spaces for indentation. However, it is now more recommended to use 2 spaces for indentation.

The following is the sample code:

<?php
function calculateSum($a, $b) {
  return $a + $b;
}

$result = calculateSum(3, 5);
echo "The sum is: " . $result;
?>

In the above example, we use 2 spaces for indentation, so that the code is more compact and readable.

4. Changes in comment specifications

Comments are an important part of the code and can help other developers understand your code. In the latest PHP code specifications, the comment specifications have also undergone some changes. It is now recommended to use line comments (//) instead of block comments (/ /).

The following is sample code:

<?php
// 这是一个示例函数，用于计算两个数的和
function calculateSum($a, $b) {
    return $a + $b;
}
?>

Using line comments can more conveniently comment out a single line of code, making the code more readable and easier to understand.

5. Summary

By understanding the latest PHP code specification changes, we can write more standardized, readable and maintainable code. Changes in naming rules, spacing and indentation, and comment specifications can help us better organize and write code. In actual development, we should keep up with the latest developments in the PHP community and follow the latest code specifications to improve code quality and work efficiency.

The above is the detailed content of How to understand the latest PHP code specification changes?. For more information, please follow other related articles on the PHP Chinese website!