PHP5中文手册

实例

进行一个服务器连接：

 <?PHP
 $con=mysqli_connect("localhost","my_user","my_password","my_db");

// Check connection
 if (mysqli_connect_errno($con))
 {
 echo "Failed to connect to MySQL: " . mysqli_connect_error();
 }

// Check if server is alive
if (mysqli_ping($con))
 {
 echo "Connection is ok!";
 }
else
 {
 echo "Error: ". mysqli_error($con);
 }

mysqli_close($con);
 ?>