PHP creating a multidimensional array of message threads from a multidimensional array (IMAP)

Question

My question is the following:

If you look below you\'ll see there is a datastructure with message ids and then the final datastructure containing the message detail

Answer 1

I don't have access to PHP right now, to test, but I believe what you're trying to do is something like

foreach($emails as $email) {
    foreach($threads as $root => $messages) {
        foreach($messages as $index =>$message_id){
            if($message_id == $email->msgno){
                 $threads[$root][$index] = $email;
            }
        }
    }
}

That being said, even if this works, there is probably a more efficient way to approach this than with three nested loops. What is your reason for needing to store the output in this format?