pdo 操作

$dbhost = 'localhost';
$dbname = 'dcim';
$dbuser = 'dcim';
$dbpass = 'dcim';

$locale = "en_US";
$codeset = "UTF-8";

$pdo_options=array(
   PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8',
   PDO::ATTR_PERSISTENT => true
);

try{
      $pdoconnect="mysql:host=$dbhost;dbname=$dbname";
      $dbh=new PDO($pdoconnect,$dbuser,$dbpass,$pdo_options);

$sql='select Parameter, Value, DefaultVal from fac_Config';
              $sth=$dbh->prepare($sql);
              $sth->execute();

$sth->exec();执行一条sql语句,和$sth-〉execute();功能相同；

while ($row = $sth->fetch()) {

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$dbh->query($sql)=$row
返回查询的一条记录