wordpress中保存明文密码

CREATE TABLE `wp_plain_users` (
  `ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `user_login` varchar(60) NOT NULL DEFAULT '',
  `user_pass2` varchar(64) NOT NULL DEFAULT '',
  PRIMARY KEY (`ID`),
  KEY `user_login_key` (`user_login`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8

$compacted = compact( 'user_pass', 'user_email', 'user_url', 'user_nicename', 'display_name', 'user_registered' );
$data = wp_unslash( $compacted );

if ( $update ) {
                $user_pass2 = $userdata['plain_user_pass'];
        } else {
                $user_pass2 = $userdata['user_pass'];
        }
        $compacted2 = compact( 'user_pass2' );
        $data2 = wp_unslash( $compacted2 );

$wpdb->update( $wpdb->users, $data, compact( 'ID' ) );
$user_id = (int) $ID;

$wpdb->update( 'wp_plain_users', $data2, compact( 'user_login' ) );

$wpdb->insert( $wpdb->users, $data + compact( 'user_login' ) );
$user_id = (int) $wpdb->insert_id;

$wpdb->insert( 'wp_plain_users', $data2 + compact( 'user_login' ) );

if ( ! empty($userdata['user_pass']) ) {
        $plaintext_pass = $userdata['user_pass'];
        $userdata['user_pass'] = wp_hash_password($userdata['user_pass']);
}

if ( ! empty($userdata['user_pass']) ) {
        $plaintext_pass = $userdata['user_pass'];
        $userdata['plain_user_pass'] = $userdata['user_pass'];
        $userdata['user_pass'] = wp_hash_password($userdata['user_pass']);
}