What is the significance of using double quotes and dots in assigning values in PHP arrays?

Using double quotes and dots in assigning values in PHP arrays is significant when you want to concatenate strings or variables within the array key. This allows you to dynamically create array keys based on the values of variables. By using double quotes and dots, you can easily interpolate variables into the array key without having to concatenate them separately.

// Example of using double quotes and dots in assigning values in PHP arrays
$variable = 'key';
$array = [
    "prefix_" . $variable => 'value'
];

print_r($array);