db_mysql::connect PHP Method

    public function connect()
    {
        $this->wlink = $this->connect_master();
        $this->rlink = $this->connect_slave();
        return $this->wlink && $this->rlink;
    }

<?php

$config = loadconfig();
$db_source = new db_mysql($config['source']);
$db_source->connect();
$db_target = new db_mysql($config['target']);
$db_target->connect();
$db_uc = new db_mysql($config['ucenter']);
if ($setting['config']['ucenter']) {
    $db_uc->connect();
}
$process = load_process('main');
if (empty($process)) {
    showmessage("请首先选择转换程序", "index.php?action=select&source={$source}");
}
$prg = getgpc('prg');
$prg_dir['tables'] = DISCUZ_ROOT . './source/' . $source . '/table/';
$prg_dir['start'] = DISCUZ_ROOT . './source/' . $source . '/';
$prg_dir['steps'] = DISCUZ_ROOT . './source/' . $source . '/';
$prg_done = 0;
$prg_next = '';
$prg_total = $prg_total = count($process['tables']) + count($process['start']) + count($process['steps']);
foreach (array('start', 'tables', 'steps') as $program) {
    if (!empty($process[$program]) && !$process[$program . '_is_end']) {
        foreach ($process[$program] as $k => $v) {
            if ($v) {
                $prg_done++;
            } elseif ($prg_next == '') {
                $prg_next = $k;
            }
        }