<?php

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