我最近将fom php 5.2升级到5.6,并且有一些代码我无法修复：

//Finds users with the same ip- or email-address
function find_related_users($user_id) {
    global $pdo;

    //print_R($pdo);

    //Let SQL do the magic!
    $sth = $pdo->prepare('CALL find_related_users(?)');
    $sth->execute(array($user_id));
    //print_R($sth);
    //Contains references to all users by id, to check if a user has already been processed
    $users_by_id = array(); 

    //Contains arrays of references to users by depth
    $users_by_depth = array();

    while ($row = $sth->fetchObject()) {
        //Create array for current depth, if not present
        if (!isset($users_by_depth[$row->depth])) 
            $users_by_depth[$row->depth] = array();

        //If the user is new
        if (!isset($users_by_id[$row->id])) {
            //Create user array
            $user = array(
                'id' => $row->id,
                'name' => $row->name,
                'email' => $row->email,
                'depth' => $row->depth,
                'adverts' => array()
            );

            //Add all users to depth array
            @array_push($users_by_depth[$row->depth], &$user);

            //Add references to all users to id array (necessary to check if the id has already been processed)
            $users_by_id[$row->id] = &$user;
        }
        //If user already exists
        else 
            $user = &$users_by_id[$row->id];

        //Add advert to user
        if ($row->advert_id != null)
            array_push($user['adverts'], array(
                'id' => $row->advert_id,
                'title' => $row->advert_title,
                'msgs' => $row->msgs,
                'url' => $row->url
            ));
        #print_r($user);
        //Unset $user variable !!! 
        //If this is missing, all references in the array point to the same user
        unset($user);
    }

    //Return users, grouped by depth
    return $users_by_depth;
}

如果仅删除美元符号前的与号,该功能将停止按预期工作.从关于*的其他问题中,我发现这是通过引用进行的调用,对于新的php版本,它将停止.但是我找不到解决方案.

感谢您对如何为php 5.6.x更新此代码的任何帮助

解决方法:

您的代码可能永远无法正常工作,因为您正在抑制array_push()调用中的错误.请注意,只有array_push()的第一个参数通过引用传递,其他值始终按值传递.

您应该删除错误抑制器@(切勿在自己的代码中使用它),在这种情况下,您还可以执行以下操作：

$users_by_depth[$row->depth][] = &$user;
                            ^^ add an element just like `array_push`

现在,您在$users_by_depth中的新值将包含对$user变量的引用.