PDO error duplicate data on SteamAuth - php

Question

I am currently using steam auth which I then translated to integrate my code into MySQL.
Unfortunately, I get a message that informs me that the table already exists.
I would like to have a code that allows me to update the data if needed, but unfortunately, I can not find on google.
Here is my code in PDO.
<?php
function newPDO() {
$host = 'x';
$db = 'x';
$user = 'x';
$pass = 'x';
$dsn = "mysql:host=$host;dbname=$db";
$opt = [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
PDO::ATTR_EMULATE_PREPARES => false,
];
$pdo = new PDO($dsn, $user, $pass, $opt);
return $pdo;
}
{
$pdo = newPDO();
$stmt = $pdo->prepare('INSERT INTO players (uid, name, avatar) VALUES (:uid, :name, :avatar)');
$stmt->execute(['uid' => $_SESSION['steam_steamid'], 'name' => $_SESSION['steam_personaname'], 'avatar' => $_SESSION['steam_avatar']]);
if($pdo->lastInsertId()) {
//login successfull
return true;
} else {
//registration failed
return false;
}
}
if(!isset($_SESSION['steamid'])) {
loginbutton("rectangle"); //login button
} else {
include ('steamauth/userInfo.php');
//Protected content
echo $steamprofile['personaname'];
echo '<img src="'.$steamprofile['avatar'].'" title="" alt="" />'; // Display their avatar!
logoutbutton("rectangle");
}
?>
And finaly this is the error code my php tells me
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '76561197992043760' for key 'uid'' in C:\xampp\htdocs\inc\login.php:23 Stack trace: #0 C:\xampp\htdocs\inc\login.php(23): PDOStatement->execute(Array) #1 C:\xampp\htdocs\index.php(52): include('C:\xampp\htdocs...') #2 {main} thrown in C:\xampp\htdocs\inc\login.php on line 23
Can you help me solve the prob ?

Answer 1

You can verify first if filed exist with SELECT
If not exist create the row with INSERT
Else update the record with UPDATE