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(PHP 4 >= 4.1.0, PHP 5)

imap_thread --  Returns a tree of threaded message

Description

array imap_thread ( resource stream_id [, int options] )

imap_thread() returns an associative array containing a tree of messages threaded by REFERENCES , or FALSE on error.

Every message in the current mailbox will be represented by three entries in the resulting array:

$thread["XX.num"] - current message number

$thread["XX.next"]

$thread["XX.branch"]

Example 1. imap_thread() Example

<?php

// Here we're outputting the threads of a newsgroup, in HTML

$nntp = imap_open('{news.example.com:119/nntp}some.newsgroup', '', '');
$threads = imap_thread($nntp);

foreach ($thread as $key => $val) {
  $tree = explode('.', $key);
  if ($tree[1] == 'num') {
    $header = imap_headerinfo($nntp, $val);
    echo "<ul>\n\t<li>" . $header->fromaddress . "\n";
  } elseif ($tree[1] == 'branch') {
    echo "\t</li>\n</ul>\n";
  }
}

imap_close($nntp);

?>