Encapsulation naming convention in PHP

The naming convention of encapsulation in PHP requires specific code examples

In PHP development, good encapsulation is an important design principle. Through reasonable naming conventions, the readability, maintainability and reusability of code can be improved. This article will introduce common encapsulation naming conventions in PHP and give specific code examples.

1. Naming of classes

The naming of classes should use PascalCase, that is, the first letter of each word is capitalized and does not contain underscores. For example: class UserService.

2. Naming of attributes

The naming of attributes should use camelCase, that is, the first letter of the first word is lowercase, and the first letter of subsequent words is capitalized , does not contain underscores. For example: $userName.

3. Naming of methods

The naming of methods should use verbs or verb-object phrases, use camelCase naming method, and also do not contain underscores. For example: getUserInfo().

4. Naming of constants

Naming of constants should be in all uppercase letters, with underscores separating words. For example: const MAX_NUM = 100.

5. Naming of private properties and methods

The naming of private properties and methods should start with an underscore, and then use camel case naming. For example: $_privateVar, _privateMethod().

The following is a sample class that demonstrates the application of the above naming convention:

class Person {
  private $_name;
  private $_age;
  
  public function setName($name) {
    $this->_name = $name;
  }
  
  public function getName() {
    return $this->_name;
  }
  
  public function setAge($age) {
    $this->_age = $age;
  }
  
  public function getAge() {
    return $this->_age;
  }
  
  public function printInfo() {
    echo "Name: " . $this->_name . ", Age: " . $this->_age;
  }
}

$person = new Person();
$person->setName("John");
$person->setAge(25);
$person->printInfo();  // Output: Name: John, Age: 25

In the above example, we can see the class name Person, attribute name$_name, $_age, method namesetName(), getName(), setAge(), getAge() and printInfo() all comply with the encapsulation naming convention. Such naming conventions make the code more readable and maintainable, and can improve code reusability.

To summarize, the encapsulated naming convention in PHP includes using big camel case for class names, small camel case for property and method names, all capitalized constant names, and private property and method names starting with an underscore. The application of these naming conventions can improve the readability, maintainability and reusability of code, thereby improving development efficiency and code quality.

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