<?php
	$conn = "mysql:host=localhost;dbname=teste";
	$user = "root";
	$pass = "";

	try{
		$pdo = new PDO($conn,$user,$pass);
	}catch(PDOException $e){
		echo "Erro -> ".$e;
	}

?>
<meta charset="utf-8">
<div class="msg">
	<?php
		echo'<script>setInterval(()=>{
			'.$sql = $pdo->query("SELECT * FROM chat");
		.'},1000);</script>';
		if($sql->rowCount()){
			foreach ($sql->fetchAll() as $value) {
				echo $value['nome']."<br>";
			}
		}
	?>
</div>