预处理语句
$dsn="mysql:host=localhost;dbname=emp";
try{
$pdo=new PDO($dsn,'root','root');
}catch(PDOException $e){
die('error:'.$e);
} $sth=$pdo->prepare('select user,pass from admin where pass=?');
$sth->execute(array(111));
$rows=$sth->fetchAll();
var_dump($rows);