Search⌘ K
AI Features
Home
Courses
PHP 8 Programming Tips, Tricks, and Best Practices

Solution: Data Handling Using the PDO Extension and Abstract Methods

Explore how to use PHP 8's PDO extension to interact with databases securely and efficiently. Understand implementing abstract methods within traits to create reusable and flexible code structures.

We'll cover the following...

Solution to Task 1

The following PHP code snippet defines a Calculator class and a MathOperations trait. The MathOperations trait should contain an abstract method called performOperation(): float and a calculate(): float method that calls the abstract method to perform a mathematical operation.

PHP
<?php
declare(strict_types=1);
trait MathOperations {
    abstract protected function performOperation(float $a, float $b): float;
    public function calculate(float $a, float $b): float {
        return $this->performOperation($a, $b);
    }
}
class Calculator {
    use MathOperations;
    protected function performOperation(float $a, float $b): float {
        return $a+$b;
    }
}
// Challenge: Implement a specific math operation by modifying the Calculator class.
$calculator = new Calculator();
$result = $calculator->calculate(10.5, 5.2);
echo "Result: " . $result . "\n";
?>

Let’s get into the code.

  • Lines 4–10: This is a PHP trait named MathOperations. Traits are reusable code blocks that can be used in multiple classes. In ...