Understand and apply the latest PHP coding standards

Understand and apply the latest PHP code specifications

As a widely used programming language, PHP’s code specifications are essential for writing clear and readable code. It's important. With the continuous development of technology, PHP code specifications are constantly updated and improved. This article will introduce the latest PHP code specifications and illustrate its application with code examples.

1. Use PSR-12 as a code specification

PSR-12 is a standard for PHP code specifications, and the drafter is PHP-FIG (PHP Framework Interop Group). Adopting PSR-12 can improve the maintainability and readability of your code.

2. Indent the code appropriately

When writing PHP code, you should indent it at appropriate locations to enhance the readability of the code. It is generally recommended to use 4 spaces or a tab for indentation.

Example:

if ($condition) {
    echo "条件成立";
} else {
    echo "条件不成立";
}

3. Strictly adhere to naming conventions

The naming of variables, functions, and classes should be readable and comply with naming conventions. It is generally recommended to use camel case naming, that is, the first letter of the word is lowercase, and the first letter of each subsequent word is capitalized.

Example:

$myVariable = "Hello World";

function myFunction() {
    // function body
}

class MyClass {
    // class definition
}

4. Limit a line of code to 80 characters

When writing PHP code, you should try to limit a line of code to 80 characters characters to increase the readability of the code. If a line of code is too long, it can be split by newlines and indentation.

Example:

$longString = "This is a long string that exceeds 80 characters. " .
              "To improve readability, we can split it into multiple lines.";

5. Comment the code to increase readability

Commenting the code can increase the readability and maintainability of the code. Comments should be concise and clear, explaining the purpose, function, and implementation of the code.

Example:

// 计算两个数的和
function sum($a, $b) {
    return $a + $b;
}

6. Strictly adhere to code format specifications

PHP code should use consistent code format, such as the position of curly braces, the use of spaces, etc. . This helps improve code readability and reduces the occurrence of errors.

Example:

if ($condition) {
    // code block
} else {
    // code block
}

for ($i = 0; $i < 10; $i++) {
    // code block
}

Summary:

By understanding and applying the latest PHP coding specifications, we can write clearer and more readable code. Proper indentation, strict compliance with naming conventions, limiting the length of a line of code, commenting code, and adhering to code format specifications are all important steps to improve code quality. Hope this article helps you when writing PHP code.

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