Example
<?php
// if device exists, update timestamp
$stmt = $mysqli->prepare("UPDATE new_devices SET nd_timestamp=? WHERE nd_deviceid=?");
$stmt->bind_param('ss', $now, $device);
$stmt->execute();
//echo "Affected Rows: ".$stmt->affected_rows; // This line is where I am checking the status of the update query.
if ($stmt->affected_rows < 1){ // Because affected_rows sometimes returns 0, the insert code runs instead of being skipped. Now I have many duplicate entries.
$ins = $mysqli->prepare("INSERT INTO new_devices (nd_id,nd_deviceid,nd_timestamp) VALUES (nd_id,?,?)");
$ins -> bind_param("ss",$device,$now);
$ins -> execute();
$ins -> store_result();
$ins -> free_result();
}
?>
