PDO操作

基本操作

 query($sql);

$row=$smt->fetchAll(PDO::FETCH_ASSOC);

echo '
';
print_r($row);
echo '
';
?>

预处理(增、删、改)操作

exec('set names utf8');
$sql="insert into t5(name,num) values('i','66')";

$smt=$pdo->prepare($sql);

if($smt->execute()){
    $tot=$smt->rowCount();
    echo "数据插入成功,成功插入{$tot}行";
}else{
    echo '数据插入失败';
}

?>

预处理（查）操作

exec('set names utf8');
$sql="select * from t5";

$smt=$pdo->prepare($sql);

$smt->execute();

$rows=$smt->fetchAll(PDO::FETCH_ASSOC);

echo "
";
print_r($rows);
echo "
";
?>