How can PHP be used to sort forum topics based on the timestamp of the latest post?

To sort forum topics based on the timestamp of the latest post, you can retrieve the latest post timestamp for each topic from the database and then use PHP's array_multisort function to sort the topics based on these timestamps in descending order. 

// Assuming $topics is an array of forum topics with each topic having a 'latest_post_timestamp' field

// Extract the timestamps into a separate array for sorting
$timestamps = array_column($topics, 'latest_post_timestamp');

// Sort the topics array based on the timestamps in descending order
array_multisort($timestamps, SORT_DESC, $topics);

// Now $topics will be sorted based on the latest post timestamp

Keywords

PHP forum sorting timestamp latest post

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