fout in functie?

function connectdb()//Databaseconnectie
{
mysql_connect("localhost", "b5692bli", "cuAsa9mA") or die(mysql_error());
mysql_select_db("b5692bli");
}

function connectdb()//Databaseconnectie
{
mysql_connect("localhost", "b5692bli", "cuAsa9mA") or die(mysql_error());
mysql_select_db("b5692bli");
}

<?php
$db = mysql_connect('localhost', 'user', 'pass');
mysql_select_db('database');
?>

<?php
$db = mysql_connect('localhost', 'user', 'pass');
mysql_select_db('database');
?>

<?php
$host = 'localhost';
$user = 'root';
$pass = 'password';
$db = 'database';
$connect = mysql_connect($host, $user, $pass);
if ($connect) {
  mysql_select_db($db);
  echo 'Verbinding gemaakt!';
}
else {
  echo 'Kon geen verbinding maken!'.mysql_error();
}
?

<?php
$host = 'localhost';
$user = 'root';
$pass = 'password';
$db = 'database';
$connect = mysql_connect($host, $user, $pass);
if ($connect) {
  mysql_select_db($db);
  echo 'Verbinding gemaakt!';
}
else {
  echo 'Kon geen verbinding maken!'.mysql_error();
}
?