PHP array returning the same value - php

Question

I'm stuck on this and I'm not actually seeing where exactly the problem is.
I have a bunch of input tags which are placed like that:
<div class="col-md-3">
<label>Material 1</label>
<input hidden="hidden" name="idMaterial[]" value="13" type="text" />
<input class="form-control" name="total[]" type="text" />
</div>
<div class="col-md-3">
<label>Material 2</label>
<input hidden="hidden" name="idMaterial[]" value="8" type="text" />
<input class="form-control" name="total[]" type="text" />
</div>
I have 20 input like that, the idea here is that if I write 10 in the Material 1's input field, my DB would receice something like:
id => A.I
idMaterial => 13
total => 10
But once I run the code, it comes like that (repeating the idMaterial, even if I write in more than 1 input. It always repeat the first):
idMaterial: 13
total: 10
idMaterial: 13
total: 20
That's the code I'm using to receive that form:
$idMaterial = array();
$total = array();
if($this->input->post('total')){
foreach($this->input->post('idMaterial') as $row){
$idMaterial = $row;
foreach($this->input->post('total') as $row2){
$total = $row2;
echo 'Material: '. $idMaterial .'<br> Total: '. $total. '<br><br>'; // TESTING THE OUTPUT
$query = $this->pedido->salvaLabMaterial($total, $idMaterial); // I'M SENDING THE DATA TO MODEL HERE
}
}
}
Any tips is very welcome.

Answer 1

#RiggsFolly
That's where I'm sending the posts the way it comes from the HTML form as you said:
$query = $this->pedido->salvaLabMaterial($this->input->post('total'),
$this->input->post('idMaterial'),
);
The model:
public function salvaLabMaterial($this->input->post('idMaterial'), $this->input->post('total')){
$query = $this->db->query(" insert into labpedidomaterial (idMaterial, total) values ('".$this->input->post('idMaterial')."', '".$this->input->post('total')."') ");
}