I'm getting these errors in my on screen
Notice: Use of undefined constant DB_SERVER - assumed 'DB_SERVER' in
C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Notice: Use of undefined constant DB_USER - assumed 'DB_USER' in
C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Notice: Use of undefined constant DB_PASS - assumed 'DB_PASS' in
C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Warning: mysql_connect(): php_network_getaddresses: getaddrinfo
failed: No such host is known. in
C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Warning: mysql_connect(): php_network_getaddresses: getaddrinfo
failed: No such host is known. in
C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Database connection failed: php_network_getaddresses: getaddrinfo failed: No such host is known.
Here is my code:
<?php
require_once("config.php");
class MySQLDatabase {
private $connection;
function __construct() {
$this->open_connection();
}
public function open_connection() {
$this->connection = mysql_connect(DB_SERVER, DB_USER, DB_PASS);
if (!$this->connection) {
die("Database connection failed: " . mysql_error());
} else {
$db_select = mysql_select_db(DB_NAME, $this->connection);
if (!$db_select) {
die("Database selection failed: " . mysql_error());
}
}
}
My constants are defined as so:
<?php
// Database Constants
defined('DB_SERVER') ? null : define("DB_SERVER", "localhost");
defined('DB_USER') ? null : define("DB_USER", "gallery");
defined('DB_PASS') ? null : define("DB_PASS", "phpOTL123");
defined('DB_NAME') ? null : define("DB_NAME", "photo_gallery");
?>
What am I doing wrong?
I got the same errors and a small edit fixed it. By the way you should migrate to mysqli instead of mysql.
Here is my question : PHP constant not defined
You should replace the require_once in the database.php with the following code
require_once(dirname(__FILE__) . DIRECTORY_SEPARATOR . "config.php");
It will set the path to absolute and will work smoothly and fine
it seems that constants are not getting available to the mysql_connection function. Include the script in which constants are defined or define the constants in class MySQLDatabase itself.
Related
<!---- Database File --->
<?php
require_once 'config.php';
class MySQLDatabase {
private $connection;
function __construct() {
$this->open_connection();
}
public function open_connection() {
$this->connection = mysqli_connect(DB_SERVER, DB_USER, DB_PASS, DB_NAME);
if(!$this->connection) {
die("Database connection Failed: " .mysqli_error($this->connection));
}else {
$db_select = mysqli_select_db($this->connection, DB_NAME);
if(!$db_select) {
die("Database connection Failed: " .mysqli_error($this->connection));
}
}
}
public function close_connection() {
if(isset($this->connection)) {
mysqli_close($this->connection);
unset($this->connection);
}
}
public function query($sql) {
$result = mysqli_query($sql, $this->connection);
$this->confirm_query($result);
return $result;
}
private function confirm_query($result) {
if(!$result) {
die("Database connection Failed: " .mysqli_error($this->connection));
}
}
}
$database = new MySQLDatabase();
$database->close_connection();
?>
<!----Config FIle which ---->
<?php
defined('DB_SERVER') ? null : define("DB_SERVER","localhost");
defined('DB_USER') ? null : define("DB_USER", "faizy");
defined('DB_PASS') ? null : define("DB_PASS", "faizy");
defined('DB_NAME') ? null : define("DB_NAME", "photo_gallery");
?>
<!---index.php---->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<?php
require_once '../includes/database.php';
if(isset($database)){ echo "true"; } else { echo "false"; }
echo "<h1>Working</h1>";
?>
</body>
</html>
Below are the warning and notice shown by my browser can anyone suggest why these are coming,When i use single php and try to connect that it connects,but when i use different function files and used OOP php than always these error are shown,Can anyone please help to solve these warnings and Notice
Notice: Use of undefined constant DB_SERVER - assumed 'DB_SERVER' in C:\xampp\htdocs\demo\oop\includes\database.php on line 13
Notice: Use of undefined constant DB_USER - assumed 'DB_USER' in C:\xampp\htdocs\demo\oop\includes\database.php on line 13
Notice: Use of undefined constant DB_PASS - assumed 'DB_PASS' in C:\xampp\htdocs\demo\oop\includes\database.php on line 13
Notice: Use of undefined constant DB_NAME - assumed 'DB_NAME' in C:\xampp\htdocs\demo\oop\includes\database.php on line 13
Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\xampp\htdocs\demo\oop\includes\database.php on line 13
Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\xampp\htdocs\demo\oop\includes\database.php on line 13
Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in C:\xampp\htdocs\demo\oop\includes\database.php on line 15
Database connection Failed:
I just made a test using all the above code in the three separate files and it all works for me. All I changed was the database name and pass to be one of my databases. You must be linking to the files wrong.
Put your constant definitions above the database logic and it'll work. That'll confirm that your require path is incorrectly configured.
I have the following , relatively simple connection script to a database :
The below script is just creating a generic interface :
<?php
//Filename: IConnectInfo.php
interface IConnectInfo
{
const HOST ="localhost";
const UNAME ="root";
const PW ="";
const DBNAME = "login";
public static function doConnect();
}
?>
The script below, that makes use of the above interface:
<?php
//FILENAME :: UniversalConnect.php
ini_set("display_errors","1");
ERROR_REPORTING( E_ALL | E_STRICT );
include_once('IConnectInfo.php');
class UniversalConnect implements IConnectInfo
{
private static $server=IConnectInfo::HOST;
private static $currentDB= IConnectInfo::DBNAME;
private static $user= IConnectInfo::UNAME;
private static $pass= IConnectInfo::PW;
private static $hookup;
public static function doConnect()
{
self::$hookup=mysqli_connect(self::$server, self::$user, self::$pass, self::$currentDB);
if(self::$hookup)
{
echo "Successful connection to MySQL:<br/>";
}
elseif (mysqli_connect_error(self::$hookup))
{
echo('Here is why it failed: ' . mysqli_connect_error());
}
return self::$hookup;
}
}
?>
Now till here everything is neat and clean and works fine :
I tested the above two files are working , by adding the following 2 lines at the end of the above file .
$instance = new UniversalConnect();
$instance::doConnect();
I get a message "Successful connection to MySQL:" , perfect !!!
now comes the 3rd file : (I have commented out some of the code to make things simple) :
<?php
//FILENAME DataEntry.php
require_once('tablework/UniversalConnect.php');
class DataEntry
{
//Variable for MySql connection
private $hookup;
private $sql;
private $tableMaster;
//Field Variables
private $name;
private $email;
private $lang;
public function __construct()
{
//Get table name and make connection
$this->tableMaster="basics";
if($this->hookup=UniversalConnect::doConnect()){
echo "<b>connected</b>";
}else{
echo "<b>Not connected</b>";
}
}
}
$instance = new DataEntry();
?>
Now when i run the above file , somehow the connection to the database fails ! even though in UniversalConnect.php the connection is successful !
The error i get is
Here is why it failed: php_network_getaddresses: getaddrinfo failed:
No such host is known. Not connected.
I really don't understand why when the connection is made in UniversalConnect.php and the same connection is being returned to dataEntry.php , does the connection Fail ! .
EDIT :: List of errors :
Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo
failed: No such host is known. in
C:\xampp\htdocs\Login2.0\tablework\UniversalConnect.php on line 19
Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses:
getaddrinfo failed: No such host is known. in
C:\xampp\htdocs\Login2.0\tablework\UniversalConnect.php on line 19
Here is why it failed: php_network_getaddresses: getaddrinfo failed:
No such host is known. Warning: mysqli_connect():
php_network_getaddresses: getaddrinfo failed: No such host is known.
in C:\xampp\htdocs\Login2.0\tablework\UniversalConnect.php on line 19
Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses:
getaddrinfo failed: No such host is known. in
C:\xampp\htdocs\Login2.0\tablework\UniversalConnect.php on line 19
Here is why it failed: php_network_getaddresses: getaddrinfo failed:
No such host is known. Not connected.
I would appreciate any help .
Thank you .
Tenali .
I'm New To PHP PDO and I have written following Code on Config.php
class DBConnect{
/* defining constants for database connectivity */
private $host="127.0.0.1";
private $user="root";
private $pass="";
private $dbname="sms-portal";
private $dbh;
private $error;
public function __construct(){
// set DSN
$dsn='mysql:host='.$this->host.'dbname='.$this->dbname;
//set Options
$options= array(
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
// Create New PDO instance
try{
$this->dbh=new PDO($dsn, $this->user, $this->pass, $options);
//die("here");
}
// Catch any errors here
catch(PDOException $e){
$this->error=$e->getMessage();
}
}
}
Whilst working on localhost and Submitting NewUserRegistration form Its Showing Me following Warning Message.
Warning: PDO::__construct() [pdo.--construct]:
php_network_getaddresses: getaddrinfo failed:
No such host is known. in config.php on line 25
Warning: PDO::__construct() [pdo.--construct]:
[2002] php_network_getaddresses: getaddrinfo failed:
No such host is kn (trying to connect via tcp://127.0.0.1dbname=sms-portal:3306)
in config.php on line 25
$dsn='mysql:host='.$this->host.'dbname='.$this->dbname;
Looks like you are missing a semicolon before dbname= - try this:
$dsn='mysql:host='.$this->host.';dbname='.$this->dbname;
$dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass);
Note : You just missed ";" between host and dbname.
Add the ; semicolon before the dbname:
$dsn='mysql:host='.$this->host.';dbname='.$this->dbname;
// ^ this one
If you look at the error, the host isn't terminated well:
tcp://127.0.0.1dbname=sms-portal:3306
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Closed 10 years ago.
I have database.php that already has require_once('../config.php') inside it.
I don't understand why I still need to put both require_once('../config.php') and require_once('../database.php') in my index.php instead of require_once('../database.php') only since require_once('../config.php') is already inside database.php?
If I remove require_once('../config.php') in the index.php I am getting error.
<pre>Notice: Use of undefined constant DB_SERVER - assumed 'DB_SERVER' in C:\xampp\htdocs\lyndaphoto\includes\database.php on line 18
Notice: Use of undefined constant DB_USER - assumed 'DB_USER' in C:\xampp\htdocs\lyndaphoto\includes\database.php on line 18
Notice: Use of undefined constant DB_PASS - assumed 'DB_PASS' in C:\xampp\htdocs\lyndaphoto\includes\database.php on line 18
Warning: mysql_connect() [function.mysql-connect]: php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\xampp\htdocs\lyndaphoto\includes\database.php on line 18
Warning: mysql_connect() [function.mysql-connect]: [2002] php_network_getaddresses: getaddrinfo failed: No such host is known. (trying to connect via tcp://DB_SERVER:3306) in C:\xampp\htdocs\lyndaphoto\includes\database.php on line 18
Warning: mysql_connect() [function.mysql-connect]: php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\xampp\htdocs\lyndaphoto\includes\database.php on line 18</pre>
config.php
$server = "localhost";
$user = "root";
$db_pass = "password";
$db_name = "photo_gallery";
define("DB_SERVER", $server);
define("DB_USER", $user);
define("DB_PASS", $db_pass);
define("DB_NAME", $db_name);
database.php
require_once("config.php");
class MySQLDatabase {
private $connection;
function __construct() {
$this->open_connection();
}
public function open_connection() {
$this->connection = mysql_connect(DB_SERVER, DB_USER, DB_PASS);
if (!$this->connection) {
die("Database connection failed: " . mysql_error());
}else {
$db_select = mysql_select_db(DB_NAME, $this->connection);
if (!$db_select) {
die("Database selection failed: " . mysql_error());
}
}
}
public function close_connection() {
if(isset($this->connection)) {
mysql_close($this->connection);
unset($this->connection);
}
}
}
$database = new MySQLDatabase();
$db =& $database;
both files are on "localhost/photogallery/includes/"
Thanks in advance! :)
All includes in your code are based on index.php (or running script), so require_once("config.php") will search the file on same dir of index.php. Try the following on database.php:
require_once(dirname(__FILE__) . "/config.php");
An alternative way to handle your include files is to make a single file called includes.php. It would contain all of your other resources.
// Filename: includes.php
require_once 'database.php';
require_once 'config.php';
Then, in your index.php and other documents you can access all of your application's resources by including that includes file.
require_once 'includes.php';
This examples are from lynda php beyond basic
config.php
<?php
defined('DB_SERVER') ? null : define("DB_SERVER", "localhost");
defined('DB_USER') ? null : define("DB_USER", "root");
defined('DB_PASS') ? null : define("DB_PASS", "");
defined('DB_NAME') ? null : define("DB_NAME", "photo_gallery");
?>
database.php
<?php
require_once('config.php');
class MySQLDatabase {
private $connection;
function __construct(){
$this->open_connection();
}
public function open_connection(){
$this->connection = mysql_connect(DB_SERVER, DB_USER, DB_PASS);
if (!$this->connection) {
die("Database connection failed: " . mysql_error());
} else {
$db_select = mysql_select_db(DB_NAME, $this->connection);
if (!$db_select) {
die("Database selection failed: " . mysql_error());
}
}
}
public function close_connection(){
if(isset($this->connection)) {
mysql_close($this->connection);
unset($connection);
}
}
public function query($sql) {
$result = mysql_query($sql, $this->connection);
$this->confirm_query($result);
return $result;
}
private function confirm_query($result){
if (!$result) {
die("Database query failed: " . mysql_error());
}
}
}
$database = new MySQLDatabase();
?>
index.php
<?php
require_once("../includes/database.php");
if (isset($database)) {
echo "true";
} else {
echo "false";
}
?>
Now here my problem when I tried index.php run it on the browser i get an error
error says:
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\php\PEAR\Config.php on line 80
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\php\PEAR\Config.php on line 166
Notice: Use of undefined constant DB_SERVER - assumed 'DB_SERVER' in C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Notice: Use of undefined constant DB_USER - assumed 'DB_USER' in C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Notice: Use of undefined constant DB_PASS - assumed 'DB_PASS' in C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Warning: mysql_connect() [function.mysql-connect]: php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Warning: mysql_connect() [function.mysql-connect]: [2002] php_network_getaddresses: getaddrinfo failed: No such host is known. (trying to connect via tcp://DB_SERVER:3306) in C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Warning: mysql_connect() [function.mysql-connect]: php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\xampp\htdocs\photo_gallery\includes\database.php on line 13
Database connection failed: php_network_getaddresses: getaddrinfo failed: No such host is known.
I somehow fix the error by renaming config.php
So here's my question why i got this error? is config.php filename the problem?
The video tutorial from Lynda php beyond basics didn't get this error.
There is some sort of error with your local configuration, maybe because you have some third party PEAR installed, hence the error message:
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\php\PEAR\Config.php on line 166
You should revise what packages and libraries your system use, because this error message is a sign of outdated code (Deprecated). Personally, I use XAMPP on Windows with my project also having config.php in its htdocs folder without any sorts of error like these. The problem is that the linked file is for php4. On my system, the 166th line reads as follows:
$this->container = new Config_Container('section', 'root');
config.php is a conventional and general name of calling the configuration file, there is no problem with it. Keeping it with this name lowers no security barriers which could be fixed by merely renaming it.
The other errors will be fixed if your project succeeds in loading the configuration file. Also:
Warning:
Please, don't use mysql_* functions to write new code. They are no longer maintained and the community has begun the deprecation process. See the red box?
Instead, you should learn about prepared statements and use either PDO or MySQLi. This article should give some details about deciding which API to use. For PDO, here is a good tutorial.
It might be due to presence of "config.php" and "Config.php" files in same directory.
In windows,file names are not case sensitive.
In linux, they are.