What are the implications of directly calling the constructor function in a PHP class without defining a PHP5 constructor?

Calling the constructor function directly in a PHP class without defining a PHP5 constructor can lead to unexpected behavior and potential errors in the code. To solve this issue, you should define a PHP5 constructor (__construct function) in the class to ensure proper initialization of the object.

class MyClass {
    public function __construct() {
        // Constructor code here
    }
}

$obj = new MyClass(); // Creating an object of the class with the constructor