<?php

$table = new PhabricatorMetaMTAMail();
$conn_w = $table->establishConnection('w');
echo pht('Assigning PHIDs to mails...') . "\n";
foreach (new LiskMigrationIterator($table) as $mail) {
    $id = $mail->getID();
    echo pht('Updating mail %d...', $id) . "\n";
    if ($mail->getPHID()) {
        continue;
    }
    queryfx($conn_w, 'UPDATE %T SET phid = %s WHERE id = %d', $table->getTableName(), $table->generatePHID(), $id);
}
echo pht('Done.') . "\n";