Are there any best practices or guidelines for passing parameters to constructors in PHP classes?

When passing parameters to constructors in PHP classes, it is a good practice to define the required parameters in the constructor method signature and provide default values for optional parameters. This helps to ensure that the class is properly initialized and avoids potential errors when creating instances of the class. 

class MyClass {
    private $param1;
    private $param2;

    public function __construct($param1, $param2 = null) {
        $this->param1 = $param1;
        $this->param2 = $param2;
    }

    // Other class methods here
}

// Creating an instance of MyClass with required and optional parameters
$obj1 = new MyClass('value1');
$obj2 = new MyClass('value1', 'value2');

Keywords

constructors parameters PHP classes guidelines passing

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