<?


require('adodb5/adodb.inc.php');


    class conexao
	{

		 var $tipo_banco = "mysql";
		 var $servidor = "localhost";
		 var $usuario = "root";
		 var $senha = "252525";
		 var $banco ;

		function conexao()
		{

			$this->banco = NewADOConnection($this->tipo_banco);
			$this->banco->dialect = 3;
			$this->banco->debug = true;
			$this->banco->Connect($this->servidor,$this->usuario,$this->senha);


		}


	}

	$con = new conexao();

	mysql_select_db("carrinho_campras");

	if($con)
		echo "conectou";
	else
		echo "nao conectou";

?>

Esta dano esse erro como resolver ?

PHP Fatal error:  Uncaught Error: Call to undefined function mysql_connect() in C:\inetpub\wwwroot\Dream\util\adodb5\drivers\adodb-mysql.inc.php:461
Stack trace:
#0 C:\inetpub\wwwroot\Dream\util\adodb5\adodb.inc.php(670): ADODB_mysql->_connect('localhost', 'root', '252525', '')
#1 C:\inetpub\wwwroot\Dream\util\Conexao.php(22): ADOConnection->Connect('localhost', 'root', '252525')
#2 C:\inetpub\wwwroot\Dream\util\Conexao.php(30): conexao->conexao()
#3 {main}
  thrown in C:\inetpub\wwwroot\Dream\util\adodb5\drivers\adodb-mysql.inc.php on line 461