What is the purpose of the PHP function getTimeStampFromDate in the given code snippet?

The purpose of the PHP function getTimeStampFromDate in the given code snippet is to convert a date string into a Unix timestamp. This can be useful for various operations where a timestamp is required, such as sorting dates or performing date calculations.

function getTimeStampFromDate($date) {
    return strtotime($date);
}

// Example usage
$dateString = "2022-10-15";
$timestamp = getTimeStampFromDate($dateString);
echo $timestamp;