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PHP uses mysqli_select_db function to select the database on which queries are to be performed. This function takes two parameters and returns TRUE on success or FALSE on failure.
Syntax
mysqli_select_db ( mysqli $link , string $dbname ) : bool
| Sr.No. | Parameter & Description |
|---|---|
| 1 |
$link
Required – A link identifier returned by mysqli_connect() or mysqli_init(). |
| 2 |
$dbname
Required – Name of the database to be connected. |
Example
Try the following example to select a database −
Copy and paste the following example as mysql_example.php −
<html>
<head>
<title>Selecting MySQL Database</title>
</head>
<body>
<?php
$dbhost = ''localhost'';
$dbuser = ''root'';
$dbpass = ''root@123'';
$conn = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $conn ) {
die(''Could not connect: '' . mysqli_error($conn));
}
echo ''Connected successfully<br />'';
$retval = mysqli_select_db( $conn, ''TUTORIALS'' );
if(! $retval ) {
die(''Could not select database: '' . mysqli_error($conn));
}
echo "Database TUTORIALS selected successfullyn";
mysqli_close($conn);
?>
</body>
</html>
Output
Access the mysql_example.php deployed on apache web server and verify the output.
Database TUTORIALS selected successfully
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