Question

我正在研究使用PHP的基于内容的过滤算法。我正在尝试使用查询"$user = [$db, "SELECT interest FROM jobseeker WHERE username = '$username'"];"从表中检索用户数据，它显示警告如注释中所示：

protected function processUser($user)
{
    $result = [];
    foreach ($user as $tag) {
        $result[$tag] = 1.0; //illegal offset type on this line
    }
    return $result;
}

还在使用查询从表中获取对象

$objects = [$db, "SELECT job_title, category FROM job_data"];

它显示了另一条警告，如注释中所述：

  protected function processObjects($objects)
    {
        $result = [];
        foreach ($objects as $object => $tags) {
            foreach ($tags as $tag) //invalid argument supplied for foreach() 
                         {

在这种情况下有效的参数是什么？对于这种情况，我已经尝试过以下查询：

$objects = [($db,"SELECT job_title from jobs") => [$db, "SELECT name FROM categories"]];

它仍然无法正常工作，因为它给此查询带来了意外错误

偏移量类型无效且参数无效

0 个答案: