从包含数组的 foreach PHP 插入数据

Question

我正在使用 codeigniter 框架，但在尝试保存表单中的数据时遇到了一点问题。

如何为每个包含其他信息的 user_answer 插入新行？

谢谢！

这是我在控制器中的 foreach 循环和对模型的调用

foreach($_POST as $key => $val)  
        {  
            $data[$key] = $this->input->post($key);  
        } 
$this->quiz_model->save_answers($data);

这是模型

function save_answers($data)
    {
            foreach ($data['user_answer'] as $key) {
                    $this->db->insert('answer', $data);
            }       
    }

表设置为

• answer_id（自动递增）
• quiz_id
• question_id
• user_id
• user_answer

变量转储

data => array(3) { ["user_id"]=> string(9) "anonymous" ["quiz_id"]=> string(2) "24" ["question_id"]=> string(2) "18" ["user_answer"]=> array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" } }

data['user_answers'] => array(3) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" }

错误

Error Number: 1054

Unknown column 'Array' in 'field list'

INSERT INTO `answer` (`user_id`, `quiz_id`, `question_id`, `user_answer`) VALUES ('anonymous', '24', Array)

Answer 1

您在foreach 循环中有问题。将您的 save_answers 方法更改为：

function save_answers($data)
{
        foreach ($data['user_answer'] as $key=>$value) { //<------------change here
                $data_insert = array('user_id'=>$data['user_id'],'quiz_id'=>$date['quiz_id'],'question_id'=>$data['question_id'],'user_answer'=>$value); //create new array
                $this->db->insert('answer', $data_insert);//<------------change here
        }       
}

Answer 2

您应该为每个 user_answer 创建一组新数据。试试这个：

function save_answers($data)
{
        foreach ($data['user_answer'] as $key) {
                $new_data = array('user_id' => $data['user_id'], 'quiz_id' => $data['quiz_id'], 'question_id' => $data['question_id'], 'user_answer' => $key)
                $this->db->insert('answer', $new_data);
        }       
}