最新用法
$sql = "SELECT username,password,email FROM user ORDER BY id ASC ";
$stmt = $conn->prepare($sql);
$stmt->execute();
echo $stmt->fetchColumn(0);
输入下标依次输入第一行的每一列
我用mysql连接时,报了100次不赞成Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /usr/local/nginx/html/PDO/pdo_testTime_23.php on line 5
