Question

I am trying to connect to a database with PHP PDO and i keep getting this: “Error: No database selected”. The code i had before PDO was working just fine. Can anyone see what i’m doing wrong? I am new to PDO.

Old Code:

$dbHost = 'localhost:3306';
$dbUser = 'username';
$dbPass = 'password';
$dbName = 'database_name';
$dbconn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting to the database!');
mysql_select_db($dbname);

PDO Code:

$dbHost = 'localhost';
$dbUser = 'username';
$dbPass = 'password';
$dbName = 'database_name';
$dbconn = new PDO('mysql:host=$dbHost;port=3306;dbname=$dbName', $dbUser, $dbPass);

Answer 1

Use DOUBLE QUOTES

Single quotes do not allow variables in them.

For example:

$dbconn = new PDO("mysql:host=$dbHost;port=3306;dbname=$dbName", $dbUser, $dbPass);

Or better as to make sure everything is escaped correctly:

$dbconn = new PDO("mysql:host={$dbHost};port=3306;dbname={$dbName}", $dbUser, $dbPass);