How can the use of constructors in PHP classes be optimized to ensure proper functionality and avoid potential issues?

When using constructors in PHP classes, it's important to ensure proper functionality and avoid potential issues by setting default parameter values and handling any necessary error checking within the constructor. This helps to prevent unexpected behavior and ensures that the object is properly initialized when instantiated. 

class MyClass {
    private $value;

    public function __construct($value = null) {
        if ($value === null) {
            throw new InvalidArgumentException('Value cannot be null');
        }
        $this->value = $value;
    }
}

Keywords

constructors PHP classes optimization functionality potential issues

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