What is the best practice for sorting topics by the date of the latest post in a PHP forum?

When sorting topics by the date of the latest post in a PHP forum, the best practice is to retrieve the latest post date for each topic and then sort the topics based on this date in descending order. This can be achieved by querying the database to get the latest post date for each topic and then using PHP's array_multisort function to sort the topics array based on these dates. 

// Assuming $topics is an array of topics with each topic having a 'latest_post_date' key

// Get an array of latest post dates for each topic
$postDates = array_column($topics, 'latest_post_date');

// Sort the topics array based on the latest post dates in descending order
array_multisort($postDates, SORT_DESC, $topics);

Keywords

PHP forum sorting latest post date

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