Unable to connect to mysql using php - php

Question

While trying to connect through PHP it displays
Warning: mysqli_connect(): (HY000/1044): Access denied for user ''#'localhost' to database 'bookedscheduler' in C:\wamp\www\booked\lib\Database\MySQL\MySqlConnection.php on line 52
Warning: mysqli_select_db() expects parameter 1 to be mysqli, boolean given in C:\wamp\www\booked\lib\Database\MySQL\MySqlConnection.php on line 53
Warning: mysqli_set_charset() expects parameter 1 to be mysqli, boolean given in C:\wamp\www\booked\lib\Database\MySQL\MySqlConnection.php on line 54
Cannot modify header information - headers already sent by (output started at C:\wamp\www\booked\lib\Database\MySQL\MySqlConnection.php:53) in C:\wamp\www\booked\Pages\Page.php on line 138
My config.php
database connection
$conf['settings']['database']['type'] = 'mysql';
$conf['settings']['database']['user'] = 'booked_user';
$conf['settings']['database']['password'] = '';
$conf['settings']['database']['hostspec'] = '127.0.0.1';
$conf['settings']['database']['name'] = 'bookedscheduler';
Mysqlconnection.php file
class MySqlConnection implements IDbConnection
{
private $_dbUser = '';
private $_dbPassword = '';
private $_hostSpec = '';
private $_dbName = '';
private $_db = null;
private $_connected = false;
/**
* #param string $dbUser
* #param string $dbPassword
* #param string $hostSpec
* #param string $dbName
*/
public function __construct($dbUser, $dbPassword, $hostSpec, $dbName)
{
$this->_dbUser = $dbUser;
$this->_dbPassword = $dbPassword;
$this->_hostSpec = $hostSpec;
$this->_dbName = $dbName;
}
public function Connect()
{
if ($this->_connected && !is_null($this->_db))
{
return;
}
$this->_db = mysqli_connect($this->_hostSpec, $this->_dbUser, $this->_dbPassword,$this->_dbName);
$selected = mysqli_select_db($this->_db, $this->_dbName);
mysqli_set_charset($this->_db, 'utf8');
if (!$this->_db || !$selected)
{
throw new Exception("Error connecting to database\nError: " . mysql_error());
Log::Error("Error connecting to database\n%s", mysql_error());
}
$this->_connected = true;
}
public function Disconnect()
{
mysqli_close($this->_db);
$this->_db = null;
$this->_connected = false;
}
public function Query(ISqlCommand $sqlCommand)
{
mysqli_set_charset($this->_db, 'utf8');
$mysqlCommand = new MySqlCommandAdapter($sqlCommand, $this->_db);
Log::Sql('MySql Query: ' . str_replace('%', '%%', $mysqlCommand->GetQuery()));
$result = mysqli_query($this->_db, $mysqlCommand->GetQuery());
$this->_handleError($result);
return new MySqlReader($result);
}
public function LimitQuery(ISqlCommand $command, $limit, $offset = 0)
{
return $this->Query(new MySqlLimitCommand($command, $limit, $offset));
}
public function Execute(ISqlCommand $sqlCommand)
{
mysqli_set_charset($this->_db, 'utf8');
$mysqlCommand = new MySqlCommandAdapter($sqlCommand, $this->_db);
Log::Sql('MySql Execute: ' . str_replace('%', '%%', $mysqlCommand->GetQuery()));
$result = mysqli_query($this->_db, $mysqlCommand->GetQuery());
$this->_handleError($result);
}
public function GetLastInsertId()
{
return mysqli_insert_id($this->_db);
}
private function _handleError($result, $sqlCommand = null)
{
if (!$result)
{
if ($sqlCommand != null)
{
echo $sqlCommand->GetQuery();
}
throw new Exception('There was an error executing your query\n' . mysql_error());
Log::Error("Error executing MySQL query %s", mysql_error());
}
return false;
}
}
class MySqlLimitCommand extends SqlCommand
{
/**
* #var \ISqlCommand
*/
private $baseCommand;
private $limit;
private $offset;
public function __construct(ISqlCommand $baseCommand, $limit, $offset)
{
parent::__construct();
$this->baseCommand = $baseCommand;
$this->limit = $limit;
$this->offset = $offset;
$this->Parameters = $baseCommand->Parameters;
}
public function GetQuery()
{
return $this->baseCommand->GetQuery() . sprintf(" LIMIT %s OFFSET %s", $this->limit, $this->offset);
}
}
?>
Please someone guide me in this regard

Answer 1

It is very easy and I am providing you a tested answer, first you need to build the Database class as seen below, you need to put it in a file and include it from your homepage (might be the index.php page). Then, you need to initiate an instance of your class from the homepage to connect to the database, the code is very well explained in details in this great article: www.muwakaba.com/php-database-connection
<?php
// Class definition
class Database{
// The constructor function
public function __construct(){
// The properties
$this->host = "your_DB_host_address";
$this->login = "your_DB_login_name";
$this->password = "your_DB_password";
$this->name = "your_DB_name";
// The methods
$this->connect();
$this->select();
}
// The connect function
private function connect(){
$this->connection = mysql_connect($this->host, $this->login, $this->password) or die("Sorry! Cannot connect to the database");
}
// The select function
private function select(){
mysql_select_db($this->name, $this->connection);
}
}
?>