pdo 调用mysql 存储过程
$stmt = $dbh->prepare(call test(:bb));
$aa = '';
$stmt->bindparam(':bb', $aa, pdo::param_str|pdo::param_input_output, 4000);
var_dump($stmt->execute());
var_dump($aa);
var_dump($stmt->fetchall(pdo::fetch_assoc));
$stmt = $dbh->prepare(select * from userinfo where u_id=:id);
$aa = 1;
$stmt->bindparam(':id', $aa, pdo::param_str|pdo::param_input_output, 4000);
var_dump($stmt->execute());
var_dump($stmt->fetchall(pdo::fetch_assoc));