PHP connection mysql database code

Copy the code The code is as follows:

mysql_connect("localhost", "root","1981427") //Connect to the server located on localhost, the user name is root
?>

Copy the code The code is as follows:

@mysql_connect("localhost", "root","1981427")
or die("Database server connection failed");
?>

Copy the code The code is as follows:

@mysql_connect("localhost", "root","1981427") //You need to connect to the database server before selecting the database
or die( "Database server connection failed");
@mysql_select_db("test") //Select database mydb
or die("Database does not exist or is unavailable");
?>

The above introduces the code for PHP to connect to the MySQL database, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.