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$mysqli = new mysqli('localhost','root','123456','test');
if($mysqli->connect_error)
{
die('connect error('.$mysqli->connect_errno.')'.$mysqli->connect_error);
}
if(mysqli_connect_error())
{
die('connect error ('.mysqli_connect_errno().')'.mysqli_connect_error());
}
echo 'success'.$mysqli->host_info;
$mysqli->close();
$mysqli = new mysqli('127.0.0.1','root','123456','test');
if($mysqli->connect_error)
{
die('connect error('.$mysqli->connect_errno.')'.$mysqli->connect_error);
}
if(mysqli_connect_error())
{
die('connect error ('.mysqli_connect_errno().')'.mysqli_connect_error());
}
echo 'success'.$mysqli->host_info;
$mysqli->close();