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Object-Oriented Programming in PHP

Solution Review: Static Methods & Properties and Traits

Explore how to use static methods and properties alongside traits in PHP. Understand defining interfaces, implementing traits with abstract methods, and creating classes that use these features to manage behaviors. Learn to test and return outputs from objects to see these concepts in action.

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Solution

PHP
<?php 
interface User {}
trait Writing {
  abstract public function writeContent();
}
class Author implements User { 
  use Writing;
  public function writeContent() {
    return "Author, please start typing an article"; 
  }
}
class Commentator implements User { 
  use Writing;
  public function writeContent() {
    return "Commentator, please start typing your comment"; 
  }
}
class Viewer implements User {}
function test()
{
  $author1 = new Author();
  $commentator1 = new Commentator();
  return $author1 -> writeContent() . " and " . $commentator1 -> writeContent();
}
echo test()
?>

Explanation

  • Line 2: We write a User interface.
  • Line 4: We write the Writing trait, which has an abstract method named writeContent().
  • Lines 8-13: We write an Author class that implements the
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