What are some common pitfalls when implementing OOP concepts like constructors in PHP?

One common pitfall when implementing constructors in PHP is forgetting to call the parent class constructor when extending a class. To solve this issue, make sure to call the parent class constructor using the parent::__construct() method within the child class constructor. 

class ParentClass {
    public function __construct() {
        echo "Parent constructor called";
    }
}

class ChildClass extends ParentClass {
    public function __construct() {
        parent::__construct();
        echo "Child constructor called";
    }
}

$child = new ChildClass();

Keywords

PHP OOP constructors inheritance visibility.

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