What is the significance of using single quotes or double quotes in array keys when assigning values in HTML forms for PHP processing?

When assigning values in HTML forms for PHP processing, it is important to use single quotes or double quotes around array keys to ensure that the keys are treated as strings. This is necessary because PHP requires array keys to be strings, and using single or double quotes ensures that the keys are interpreted correctly. Failure to do so may result in errors or unexpected behavior in your PHP code.

// Incorrect way of assigning values in HTML form
$myArray = [
    name: $_POST['name'],
    age: $_POST['age']
];

// Correct way of assigning values in HTML form
$myArray = [
    'name' => $_POST['name'],
    'age' => $_POST['age']
];