How does the scope of the constructor method in PHP classes affect the availability of classes?

The scope of the constructor method in PHP classes affects the availability of classes by determining where the class can be instantiated and accessed. If the constructor method is set to private, the class can only be instantiated and accessed from within the class itself. To make the class available for instantiation from outside the class, the constructor method should be set to public. 

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

// Instantiate the class
$obj = new MyClass();

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