How can I get a list of MySQL databases in PHP using PDO?
show databases

select schema_name from information_schema.schemata

// Connect
ph()->DB('mysql://host.tld/db_name/', 'user', 'pass');

// Get DBs
echo '<pre>';
print_r(ph()->DB('SHOW DATABASES;'));
echo '</pre>';

$user = 'root';
$pass = 'root';
$server = 'localhost';

$dbh = new PDO( "mysql:host=$server", $user, $pass );
$dbs = $dbh->query( 'SHOW DATABASES' );

while( ( $db = $dbs->fetchColumn( 0 ) ) !== false )
{
    echo $db.'<br>';
}

$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
$db_list = mysql_list_dbs($link);
while ($row = mysql_fetch_object($db_list))
{
    echo $row->Database . "n";
}