Insert array from form to sql

Question

I have a form that someone can add multiple phone numbers and extension, and I am trying to save them in the database, whenever I save the data it shows the word "Array" in both filed.

Here is my code so far:

if (!empty($_POST['Phone']) && isset($_POST['Extension'])) {
foreach ($_POST['Phone'] as $key => $value) {
    foreach ($_POST['Extension'] as $key => $value2) {
        $para = array("UserID" => \PDO::PARAM_INT, "Phone" => \PDO::PARAM_STR, "Extension" => \PDO::PARAM_STR);
        $val = array($_SESSION['UserID'], $_POST['Phone'], $_POST['Extension']);
        $r = DB::Call("[spPhoneInsert]", $para, $val);           
    }
}

if (count($r) > 0 && $r[0]['Result'] == 'Ok') {
    header("location:home.php?added_phone=1");
} else {
    header("location:home.php?error_phone=1");
}
exit;
}

Answer 1

whenever you post a form with multiple same name elements like

<input type="text" name="phone[]">
<input type="text" name="phone[]">

data is posted as array to the action page. You have to loop through this array to save them in data base

you can loop like this and create whatever format you want Following code will save your number and extension comma seprated

    foreach ($_POST['phone'] as $number){
    $allNumbers .= $number.',';
    }
foreach ($_POST['extension'] as $ext){
    $allExt .= $ext.',';
    }
  $para = array("UserID" => \PDO::PARAM_INT, "Phone" => \PDO::PARAM_STR, "Extension" => \PDO::PARAM_STR);
        $val = array($_SESSION['UserID'], trim($allNumbers,','), trim($allExt,','));
        $r = DB::Call("[spPhoneInsert]", $para, $val);