$serverName = "";
$database = "";
$uid = "";
$pwd = "";
$dsn="sqlsrv:server=$serverName ; Database = $database";
$hai = new PDO($dsn,$uid,$pwd);
$query1="select * from a where b='123' ";
php 想查询出总共的条数,并条数大于0输出正确,否则输出错误
sqlserver数据库