如何将每个数据从数组保存到数据库

Question

I have a form where I needed to split into two table in the database. tbl_1 consist of single value per column, then tbl_2 consist of multiple value per column. I know if I pass multiple data per column I'm going to violate a normalization in database. So what I did I reference tbl_1 to tbl_2 . The problem is I don't know how to save each value in an array to a column. example Classification has 4 value which I needed to save in tbl_2 and reference it to tbl_1 . How am I able to do this? I'm using PDO .

HTML snippet:

<input type="text" name="classification[]" placeholder="Classification No. 1" />
<input type="text" name="classification[]" placeholder="Classification No. 2" />
<input type="text" name="classification[]" placeholder="Classification No. 3" />
<input type="text" name="classification[]" placeholder="Classification No. 4" />

So for each value will create 4 rows that has the same id being reference to tbl_1 . It should be like this:

Answer 1

I am just giving demo....try something like this

<?php

$x = 1;
$y = 1;

$classification = array('class1', 'class2');
$area = array('area1', 'area2');
$market = array('market1', 'market2');

$no_of_loop = count($classification); //4

while($no_of_loop)
{
    $query = insert into (`tbl_1_id`, `tbl_2_id`, `Classification`, `Area`, `Market`) values($x, $y, $classification, $area, $market);
$x++;
}
$y++;

mysqli_query($query, $con);

?>

Answer 2

Try multidimensional array instead.

So, you input can be something like:

<input type="text" name="data[classification][]" placeholder="Classification No. 1" />
<input type="text" name="data[area][]" placeholder="Area No. 1" />
<input type="text" name="data[market_value]" placeholder="Market Value No. 1" />

Then, using for loop, you can insert them to database :

 $data = 'your array here whatever you receive using GET/POST';

for($i=0; $i<count($data['classification']); $i++){
  $sql = INSERT INTO (`tbl_1_id`, `tbl_2_id`, `classification`, `area`, `market_value`) VALUES (`auto_increment_id`, `value_of_table1`, $data['classification'][$i], $data['area'][$i], $data['market_value'][$i]);
}