Question

I’m using a jQuery plugin to dynamically add input text fields.
The name of the input elements becomes name="cl[]", name="ingredient[]".

Now I need to submit these fields to a database somehow…
If there was only one text field that should be added, I guess I could just do a simple foreach-loop like this:

foreach($ingredient as $val){
    //  do an ordinary PDO sql insert statement on each of them
}

But I need is to submit two text fields, and the last inserted ID from a previous query, on each of them.
If I added two fields, I would have three in total to be submitted; Like this:

<input type="text" name="oz[]" id="cl_1" placeholder="cl" class="cl" >
<input type="text" name="ingredient[]" id="ingredient_1" placeholder="ingredient name" class="ingredient" />

<input type="text" name="oz[]" id="cl_2" placeholder="cl" class="cl" >
<input type="text" name="ingredient[]" id="ingredient_2" placeholder="ingredient name" class="ingredient" />

<input type="text" name="oz[]" id="cl_3" placeholder="cl" class="cl" >
<input type="text" name="ingredient[]" id="ingredient_3" placeholder="ingredient name" class="ingredient" />

These fields are ingredients for drinks that is inserted into a sepparate table, and the last id is the relations key.

Any suggestion on how I can accomplish this?

UPDATE:
I just tried to add a hidden textfield with the name raw_materials[] and do a ẁhile`-loop on that one.
Then do a sql insert statement inside this while loop. Maybe I’m on to something, but this didn’t work:

while($raw_materials){
    $ins_ingredients = $con->prepare(
        'INSERT INTO recipes_ingredients (
            recipe_id, raw_material_id, amount
        ) VALUES (
            :last_id, :material, :amount
        )'
    );
    $ins_ingredients->bindValues(':last_id',$last_id);
    $ins_ingredients->bindValues(':material',$ingredient);
    $ins_ingredients->bindValues(':amount',$oz);
    $ins_ingredients->execute();
}

Answer 1

Check out this:

$values = array_map(null, $_POST['oz'], $_POST['ingredient']);  // You can add other arrays after this
foreach ($values as $value)
{
    list($oz, $ingredient) = $value;
    // Insert data in DB
}