What are some common pitfalls when instantiating arrays of class objects in PHP?

One common pitfall when instantiating arrays of class objects in PHP is forgetting to initialize each array element as a new instance of the class. This can lead to unexpected behavior or errors when trying to access methods or properties of the objects in the array. To solve this issue, make sure to properly instantiate each array element with the `new` keyword before adding it to the array.

class MyClass {
    // class definition
}

// Incorrect way: forgetting to initialize array elements
$objects = [];
$objects[] = new MyClass; // Correct way: initialize each array element
$objects[] = new MyClass;

// Accessing objects in the array
foreach ($objects as $object) {
    // Do something with each object
}