How to post form values created by loop in codeigniter

Question

How to get post values from form created using loop,

Here is my controller

    $valuepost=$this->input->post('value');

if($valuepost==1){
    $val1=array('NoOfinput' => $this->input->post('val1input'),'NoOfbox' => $this->input->post('val1box'),'boxvalue' => null);
    $val=array($val1);
    } 
    elseif($valuepost==2){
    $val1=array('NoOfinput' => $this->input->post('val1input'),'NoOfbox' => $this->input->post('val1box'),'boxvalue' => null);
    $val2=array('NoOfinput' => $this->input->post('val2input'),'NoOfbox' => $this->input->post('val2box'),'boxvalue' => null);
    $val=array($val1,$val2);
    }   
        elseif($valuepost==3){
    $val1=array('NoOfinput' => $this->input->post('val1input'),'NoOfbox' => $this->input->post('val1box'),'boxvalue' => null);
    $val2=array('NoOfinput' => $this->input->post('val2input'),'NoOfbox' => $this->input->post('val2box'),'boxvalue' => null);
    $val3=array('NoOfinput' => $this->input->post('val3input'),'NoOfbox' => $this->input->post('val3box'),'boxvalue' => null);

    $val=array($val1,$val2,$val3);
    }

    elseif($valuepost==4){
    $val1=array('NoOfinput' => $this->input->post('val1input'),'NoOfbox' => $this->input->post('val1box'),'boxvalue' => null);
    $val2=array('NoOfinput' => $this->input->post('val2input'),'NoOfbox' => $this->input->post('val2box'),'boxvalue' => null);
    $val3=array('NoOfinput' => $this->input->post('val3input'),'NoOfbox' => $this->input->post('val3box'),'boxvalue' => null);
    $val4=array('NoOfinput' => $this->input->post('val4input'),'NoOfbox' => $this->input->post('val4box'),'boxvalue' => null);

    $val=array($val1,$val2,$val3,$val4);
    }

 echo val;

How to simplify this using loop or foreach , Please help with the solution required

Answer 1

Using (int) to cast your post value into an int.

$valuepost = (int) $this->input->post('value');
// declaring the array that will store the final result
$val = [];

// looping as many times as necessary
for ($i = 1; $i <= $valuepost; $i++) {
    $val[] = [
        'NoOfinput' => $this->input->post('val' . $i . 'input'),
        'NoOfbox' => $this->input->post('val' . $i . 'box'),
        'boxvalue' => null,
    ];
}

var_dump($val);

You also should check before looping if $valuepost is not to high (if you are sure that it won't be over 4 by example) :

if ($valuepost > 4) {
    throw new \Exception('Must not be over 4.');
}

(an exception or a redirection)