How to insert array data to mysql table - php

Question

I have two tables called op_group and options .These two tables are filled by array values. For example, I want to insert pizza details into my tables.
It look like this:
Cheese pizza and Sausage pizza will get inserted into the op_group table.
Other data will get inserted into the options table. These options should be inserted based on the relevant foreign key op_group id.
This is what i have tried. All details are inserted but not for the relevant op_group.
$opg_name=$_POST['opg_name'];
$price=$_POST['price'];
$itemCountz = count($opg_name);
$itemValues=0;
$queryValue1 = "";
for($i=0; $i<$itemCountz; $i++) {
$itemValues++;
if($queryValue1!="") {
$queryValue1 .= ",";
}
$queryValue1 = "INSERT INTO op_group
(opg_id,ml_id,cat_id,res_id,res_name,op_grp)
VALUES(NULL,'".$ml_id."','".$cat_id."','".$res_id."','".$res_name."','".$_POST["opg_name"][$i]."')";
$result1= mysql_query($queryValue1)or die(mysql_error());
$query6= "SELECT * FROM op_group ORDER BY opg_id DESC LIMIT 1" ;
$result6= mysql_query($query6);
while($row6 = mysql_fetch_assoc($result6)){
$opg_id=$row6['opg_id'];
}
$itemCount2 = count($price);
$itemValues1 = 0;
$queryValue2 = "";
for($j=0;$j<$itemCount2;$j++) {
if(!empty($_POST["op_name"][$j])||!empty($_POST["price"][$j])) {
$itemValues1++;
if($queryValue2!="") {
$queryValue2 .= ",";
}
$queryValue2 = "INSERT INTO options (op_id,opg_id,ml_id,cat_id,res_id,res_name,opt,price) VALUES (NULL,'".$opg_id."','".$ml_id."','".$cat_id."','".$res_id."','".$res_name."','".$_POST["op_name"][$j]."','".$_POST["price"][$j]."')";
}
}
$result2=mysql_query($queryValue2)or die(mysql_error());
}
This code give result like this
options table inserted data looks like this
how to solve this?

Answer 1

The reason why you are seeing options being duplicated for each option group is because your $queryValue2 is being repeatedly executed for each option group inside your outer most for($i = 0; $i < $itemCountz; $i++) loop.
As it stands, your current way of organizing the $_POST inputs are quite messy (and so are your duplicated row attributes). I will suggest you group your HTML inputs fields by each option group. You can try something like this:
<div>
<input type="text" id="first_order" name="orders[0][name]" /><br />
<input type="text" name="orders[0][options][0][price]" /><br />
<input type="text" name="orders[0][options][0][size]" /><br />
<input type="text" name="orders[0][options][1][price]" /><br />
<input type="text" name="orders[0][options][1][size]" /><br />
</div>
<div>
<input type="text" id="second_order" name="orders[1][name]" /><br />
<input type="text" name="orders[1][options][0][price]" /><br />
<input type="text" name="orders[1][options][0][size]" /><br />
<input type="text" name="orders[1][options][1][price]" /><br />
<input type="text" name="orders[1][options][1][size]" /><br />
</div>
Notice how I use the HTML name attribute to group the food options by the food. Then if you submit this form, you will see that the $_POST array appears to look something like this:
Array
(
[orders] => Array
(
[0] => Array
(
[name] => "Cheese Pizza"
[options] => [0] => Array([size] => "8'"
[price] => "12")
[1] => Array([size] => "12'"
[price] => "14")
)
[1] => Array
(
[name] => "Sausage Pizza"
[options] => [0] => Array([size] => "8'"
[price] => "13")
[1] => Array([size] => "12'"
[price] => "16")
)
)
)
Now you can tidy up your backend PHP codes with something like this:
foreach ($_POST['orders'] as $orders) {
// .. some codes
foreach($orders as $order) {
// .. add codes to insert into op_groups where $order['name'] will give you the pizza name
foreach($order['options'] as $details) {
// .. add codes to insert into options where $details['size'] and $details['price'] will give you the corresponding values
}
}
}
Also, you can use mysqli.insert-id to get the row ID of the last inserted row. Then you can get rid of that silly $query6 and its while loop.
Of course, don't forget to sanitize your $_POST inputs before using them!
I am getting a bit tired, if there are mistakes, I will fix them up tomorrow. Hope it helps!