echo $_GET["code"];

コードの情報をDBから取得する
$time_start = microtime(true);
$code = empty($_GET["code"])? 'null' : $_GET["code"];
echo $code. "<br>";
$dsn = "mysql:dbname=equity;host=localhost";
$user = "hoge";
$password = "hogehoge";
try {
$dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e){
print('connection failed:'.$e->getMessage());
}
$sql = "select * from lists where code = $code";
$stmt = $dbh->query($sql);
$result = $stmt->fetch(PDO::FETCH_ASSOC);
echo $result['name']. "<br>";
echo $result['sector']. "<br>";
echo $result['market']. "<br>";
echo "<br>";
$time = microtime(true) - $time_start;
echo "{$time}秒";
OK!

パラメータからデータを読み込む

パラメータを変える

なるほど