Question

I have a little php script that goes to mySql database.

I want to look, before i insert a new record in the database, if the number (value1) equals a record in the database. Wich is also in Row1.

So i want to:

• Look if the phone number that comes in equals to a phone number in the database. If it does, than it must keep the phone number the same value, only update : longitude, latitude & timestamp.
• If the phone number equals null. Don’t put any of the values in my database. No records at all.
• If the phone number is not in the database, also do nothing. Repeat it just like the value is null.

Here’s my current PHP code, where i just make new records when there are any new values.

  <?php



$con = mysql_connect('server', 'user_name', 'pass');
if (!$con)
{
die('Could not connect: ' . mysql_error());
 }

mysql_select_db("db_name", $con);

if (isset($_REQUEST['data'])){
$json = $_REQUEST['data']; // recieve json from app
$data = json_Decode($json);

mysql_query("INSERT INTO test (id, longitude, latitude, timestamp) VALUES ('$data-   >id','$data->longitude','$data->latitude','$data->timestamp')"); 

}

mysql_close($con);
?>

If anyone could help me with this, it would be appreciated!

Thanx

Answer 1

You didn’t mentioned the phone number field, so I assumed is phone_number:

$db = new PDO('mysql:host=localhost;dbname=testdb;charset=UTF-8', 'username', 'password', array(PDO::ATTR_EMULATE_PREPARES => false, PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));

if (isset($_REQUEST['data'])){
    $data = json_decode($_REQUEST['data']);
    if($data->phonenumber){
        $stmt = $db->prepare("SELECT `id` FROM `test` where `id`=:phone_number");
        $stmt->execute(array(':phone_number' => $data->phonenumber));
        $row_count = $stmt->rowCount();

        if($row_count && ($data->phonenumber != '')){
            $stmt = $db->prepare("UPDATE `test` SET `longitude`=:longitude, `latitude`=:latitude, `timestamp`=:timestamp WHERE `id`=:phone_number");
            $stmt->execute(array(':longitude' => $data->longitude,':latitude' => $data->latitude,':timestamp' => $data->timestamp,':phone_number' => $data->phonenumber));
        }
    }
}