在数据库中提交数组类型输入文件

Question

I have a form, which has two fields: "product_name" and "product_q" and in my form i have an option to increase the number of fields in product_name and product_q

 <select name="product_name[]" id="product_name">
 <option value="please select"></option> 
 <option value="1">demo1</option> 
 <option value="2">demo2</option> 

 </select>

<select name="product_q[]" id="product_q">
 <option value="please select"></option> 
 <option value="1">1</option> 
 <option value="2">2</option> 

 </select>

and an action page like

 public function order(){


    $Product_q = $this->input->post('quantity');
    $sponserid = $this->session->userdata('number');
    $pname['product_name'] = $this->input->post('product_name');
    foreach($Product_q as $key => $value){
    $data['Product_q'] = $value;
    $data['Product_Name'] = $pname['product_name'][$key]; 
    $this->mymodel->insert_items($data);

    }

and my model

function insert_items($data){
    $this->db->insert("lucky_order", $data);
    return;

}

Please help to insert data database my form look like this:

FORM with one field

Form with two field

Answer 1

We cannot insert array directly into database so before inserting it to database we need to encode array into json. You can do it by following <?php json_encode($data); ?> <?php json_encode($data); ?> and then later where you want fetch this data then you can simply decode that data back to array by using following method <?php json_decode($data); ?> <?php json_decode($data); ?>

Answer 2

you can try this :

<select name="product_name[]" class="product_name">
 <option value="please select"></option> 
 <option value="1">demo1</option> 
 <option value="2">demo2</option> 

 </select>

<select name="product_q[]" class="product_q">
 <option value="please select"></option> 
 <option value="1">1</option> 
 <option value="2">2</option> 

 </select> 
<input type="hidden" name="product_count" value="1" />



You have to increment /decrement the product_count value on addition 
or removal or product 

for controller :

 loop your function in model for inserting into database 

for times of product_count and the values for each using $key something like this :

        for ($i=0; $i<$_POST['product_count']; $i++){

call the function of insert by passing the each value using above $i variable. like

         $_POST['product_name'][$i]; 

this will get you your first product name similarly for all 
   and you can call the model function and pass the above values each 
time with incremented value of $i