i found the answer
i just add
global $wpdb;
then update the database
$wpdb->query( "UPDATE `$wpdb->posts` SET
`post_content` = '".current_time("Y-m-d H:i:s")."'
WHERE `ID` = '".$_POST['content']."'" );
i found the answer
i just add
global $wpdb;
then update the database
$wpdb->query( "UPDATE `$wpdb->posts` SET
`post_content` = '".current_time("Y-m-d H:i:s")."'
WHERE `ID` = '".$_POST['content']."'" );