Bonjour.

Avec ma class ci-bas, j'obtiens ces erreurs :

PHP Notice: Use of undefined constant DB_HOST - assumed 'DB_HOST' in /home/public_html/class.php on line 93
PHP Notice: Use of undefined constant DB_USER - assumed 'DB_USER' in /home/public_html/class.php on line 93
PHP Notice: Use of undefined constant DB_PASS - assumed 'DB_PASS' in /home/public_html/class.php on line 93
PHP Notice: Use of undefined constant DB_NAME - assumed 'DB_NAME' in /home/public_html/class.php on line 93
PHP Fatal error: Call to undefined method dao::tableExists() in /home/public_html/class.php on line 56

pourtant, ça semble bien défini?

C'est quoi mon erreur?

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<?php
class dao
{
        private $db = NULL;
        private $connection_string = NULL;
        private $db_host = DB_HOST;        
        private $db_user = DB_USER;        
        private $db_pass = DB_PASS;        
        private $db_name = DB_NAME;        
        private $con = false;
        private $result = array();
 
        public function __construct($db_user = DB_USER, $db_pass = DB_PASS, $db_name = DB_NAME, $db_type = 'mysql', $db_host = 'localhost')
        {
                $this->db_host = $db_host;
                $this->db_user = $db_user;
                $this->db_pass = $db_pass;
                $this->db_name = $db_name;
                $this->connection_string = "mysql:host=".$db_host.";dbname=".$db_name;
                return $this;
        }
 
        public function connect()
        {
                if(!$this->con)
                {
                try {
                        $this->db = new PDO($this->connection_string,$this->db_user,
            $this->db_pass);
                        $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                        $this->con = true;
                        return $this->con;
                        }
                        catch (PDOException $e)
                        {
                        return $e->getMessage();
                        }
                }
                else
                {
                        return true; //already connected, do nothing and show true
                }
        }
 
        public function disconnect()
        {
                if($this->con)
                {
                        unset($this->db);$this->con = false;
                        return true;
                }
        }
 
        public function select($table, $rows = '*', $where = null, $order = null)
        {
                if($this->tableExists($table))
                {
                        $q = 'SELECT '.$rows.' FROM '.$table;
                        if($where != null)
                                $q .= ' WHERE '.$where;
                        if($order != null)
                                $q .= ' ORDER BY '.$order;
                        $this->numResults = null;
                try {
                        $sql = $this->db->prepare($q);
                        $sql->execute();
                        $this->result = $sql->fetchAll(PDO::FETCH_ASSOC);
                        $this->numResults = count($this->result);
                        $this->numResults === 0 ? $this->result = null : true ;
                        return true;
                        }
                        catch (PDOException $e)
                        {
                                return $e->getMessage().''.$e->getTraceAsString().''; 
                        } 
                }
        }
 
        public function getResult()
        {
                return $this->result;
        }
 
        public function getRows()
        {
                return $this->numResults;
        }
 
}
?>
 
<?php
$db = new dao('user','pass','mabase');
$db->connect();
$result = $db->select('matable');
if ($result === true)
{
    echo "result rows ".$db->getRows()." ";
    echo "result select ";
    print_r($db->getResult());
}
else
{
    var_dump($result);
}
$db->disconnect();
?>