What is the difference between a multidimensional array and an array of objects in PHP?

A multidimensional array in PHP is an array that contains one or more arrays as its elements, allowing for a way to store data in a structured manner with multiple levels. On the other hand, an array of objects in PHP is an array where each element is an object of a specific class, allowing for more complex data structures and behaviors to be represented. The main difference is that a multidimensional array contains simple data types (like strings or integers) while an array of objects contains instances of classes.

// Multidimensional array example
$multiArray = array(
    array(1, 2, 3),
    array(4, 5, 6),
    array(7, 8, 9)
);

// Array of objects example
class Person {
    public $name;
    public $age;

    public function __construct($name, $age) {
        $this->name = $name;
        $this->age = $age;
    }
}

$person1 = new Person('Alice', 25);
$person2 = new Person('Bob', 30);

$objectArray = array($person1, $person2);