I need to capture multiple date visits that a client makes at once from an HTML form.
All the other data types get stored successfully but the date is changed into the default "**1970-01-01**".

Is there a way of converting the date array into individual dates as picked from the HTML Form to avoid the default dates and the error:
"**Undefined index: 01-01-1970**".

I have tried to play around with the date array but no luck.

```
        <?php 
        //Post Variables
        //name="ClientID[]" 1
        //name="ClientID[]" 2
        //$ClientID = array(1,2);

        //name="VisitDate[]"  01-01-2021
        //name="VisitDate[]"  01-01-2020
        //$VisitDate=array('01-01-2021','01-01-2022');

        $ClientID=$_POST['ClientID'];

        $VisitDate=$_POST['VisitDate'];
            foreach ($VisitDate as $k=>$v) {
                    $VisitDate[$k] = date('Y-m-d', strtotime($v));
                }

        for ($i = 0; $i < count($ClientID); $i++) { 

                $ClientID=$ClientID[$i];

                $VisitDate=$VisitDate[$i];

            }

        $query=$con->prepare("insert into records (ClientID,VisitDate) values ('$ClientID','$VisitDate')");
        $result=$query->execute();  

        ?>

```