”;
There are a few important commands in MySQL which can be executed either at the MySQL prompt or by using any script like PHP to get various important information about the database server.
| Sr.No. | Command & Description |
|---|---|
| 1 |
SELECT VERSION( )
Server version string
|
| 2 |
SELECT DATABASE( )
Current database name (empty if none)
|
| 3 |
SELECT USER( )
Current username
|
| 4 |
SHOW STATUS
Server status indicators
|
| 5 |
SHOW VARIABLES
Server configuration variables
|
Example
Try the following example to get database info −
Copy and paste the following example as mysql_example.php −
<html>
<head>
<title>Getting MySQL Database Info</title>
</head>
<body>
<?php
$dbhost = ''localhost'';
$dbuser = ''root'';
$dbpass = ''root@123'';
$dbname = ''TUTORIALS'';
$mysqli = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
$tutorial_count = null;
if($mysqli->connect_errno ) {
printf("Connect failed: %s<br />", $mysqli->connect_error);
exit();
}
printf(''Connected successfully.<br />'');
if ($result = mysqli_query($mysqli, "SELECT DATABASE()")) {
$row = mysqli_fetch_row($result);
printf("Default database is %s<br />", $row[0]);
mysqli_free_result($result);
}
$mysqli->close();
?>
</body>
</html>
Output
Access the mysql_example.php deployed on apache web server and verify the output.
Connected successfully. Default database is tutorials
Advertisements
”;