I have read up on the above error and from the way I understand, there could be many reasons that error pops up. I will try to be as specific as possible.
I have made a php file to do a simple database connect:
<?php
header('Access-Control-Allow-Origin: *');
$servername = "188.166.***.***";
$username = "root";
$password = "mypassword";
$dbname = "vod";
$con = new mysqli($servername,$username,$password,$dbname);
if($con->connect_error){
die("error ".$con->connect_error);
}
echo "success";
?>
When I run the above code I get the error:
Can't connect to MySQL server on 'XXX.XXX.XXX.XXXX' (111)
When I enter XXX.XXX.XXX.XXX in the URL bar I am taken to the index.html file of the server. And when I enter XXX.XXX.XXX.XXX/phpmyadmin I am taken to phpmyadmin.
I hope I made my question clear.
It depends on you if you want to do it like this:
CREATE USER 'user'#'%' IDENTIFIED BY 'userpassword';
GRANT ALL PRIVILEGES ON *.* TO 'user'#'%' WITH GRANT OPTION;
you can run it at your query database. just change user and password. good luck
Related
For example, when trying to connect to server xy.xy.xyz.xyz like below, does the script have to exist on that server to work?
<?php
$servername = "xy.xy.xyz.xyz";
$username = "username";
$password = "password";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
No it doesn't. The DB server has to be configured to allow remote connections though.
You can check this for further details for MySQL.
No, what's most likely happening is that your MySQL database isn't allowing users to sign in if they are trying to access it from an outside IP address.
Run the following command through MySQL
SELECT *
FROM information_schema.user_privileges
WHERE GRANTEE LIKE '%username%';
Change the username value to whatever the actual user name value is. If you're seeing a bunch of rows where the GRANTEE column is 'username'#'localhost' and nothing that looks like 'username'#'%', then your user is being limited to only localhost (same machine) access.
If you want to grant your user non-local access, you can use the following:
GRANT ALL PRIVILEGES
ON mydatabasename.*
TO 'username'#'%'
IDENTIFIED BY 'mypassword'
In the above, % means my user can connect from anywhere. This example grants all administrator rights to your user, but you can change that if you wish.
quick mysql question.
I'm new at php/mysql and followed a tutorial(php/mysql for dummies) so I don't really know what I did wrong or if the tutorial is wrong.
I have a file, "database_connections.inc", that looks like this:
<?php
$user = "username";
$host = "host";
$password = "password";
$database = "database";
?>
With the actual credentials not included for obvious reasons.
Then in another file, login.php, I have:
include("database_connections.inc");
$cxn = mysqli_connect($host,$user,$password,$database)
or die("Query died: Couldnt connect to server.");
I get an error message with the "or die" text, accompanied by a warning:
host xxxxx.000webhost.com is not allowed to connect to this mysql server in....
Why not? I'm sure my credentials are all correct.
I've read in a few places to run some shell statements...but can't really do that, I'm on Windows.
I'm using phpMyAdmin, so hopefully I can do something from there?
Open "database_connections.inc" and change it to look like this:
<?php
$user = "root";
$host = "localhost";
$password = "";
$database = "test";
?>
MySQL is by default configured to work with localhost (or 127.0.0.1), in order to allow "host xxxxx.000webhost.com" as host, open phpMyAdmin and select "SQL" and execute this query;
GRANT ALL ON your_database_name.* TO your_user#your_host_xx.xxx.xx.xx IDENTIFIED BY 'your_password';
Go into PHPMyAdmin, and edit your user.
Under Login Information, there should be an option for "Host"- try adding xxxxx.000webhost.com.
I am having some problems with my database. I created a user, and a database, but I can't seem to access it with php.
My code is:
$host = 'anapaiva.pt:2082';
$user = 'anapaiva_p1';
$pass = 'xxxx';
$db = 'anapaiva_mcmm1';
#mysql_connect($host, $user, $pass) or die('err: '.mysql_error());
#mysql_select_db($db) or die('err: '.mysql_error());
And on the webpage, appears the following errors:
Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'anapaiva_p1'#'apollo' (using password: YES) in /home/anapaiva/public_html/mcmm/connection/dbconn.php on line 6
Warning: mysql_select_db() expects parameter 2 to be resource, boolean given in /home/anapaiva/public_html/mcmm/connection/dbconn.php on line 7
The same code was working with my other server, hungergamesportugal.com, but I can't seem to upload the sql file to that database (it says I don't have permissions... I don't know why), and on this server it allows me to import the sql file, but I can't seem to access the database.
Can someone please help? :/
You're using the wrong port. 2082 is for cPanel. 3306 is for MySQL (usually).
Generally, you can omit the port entirely:
$host = 'anapaiva.pt';
You also need to assign the connect function to a variable:
$dh = mysql_connect($host, $user, $pass);
So that you can close the connection when you're done with it:
mysql_close($dh);
You can allow permission using cpanel, add permission to remote mysql. I don't remember exact name, but it was something like, remote database. on clicking you can add ip address to allow database permission. This may help you. search remote database at cpanel. May be this help you, http://forums.cpanel.net/f354/enable-remote-access-customer-database-251951.html
Test same user on localhost
$mysql_host = "localhost";
$mysql_database = "db_name";
$mysql_user = "root";
$mysql_password = "password";
$con = mysql_connect($mysql_host,$mysql_user, $mysql_password);
mysql_select_db($mysql_database, $con);
OR
Check user privileges
Using GRANT statement check whether user has rights.
Reference: http://dev.mysql.com/doc/refman/5.0/en/show-grants.html
whenever I am trying to connect phpMyadmin through php script it is showing some errors like this Warning: mysql_connect(): Access denied for user 'www-data'#'localhost' (using password: NO) I am using ubuntu 11.04.So can you tell me how to solve this?
This error simply means that your connection information is incorrect. You are trying to connect to the MySQL database using the username "www-data#localhost" with no password. Check your MySQL permissions to see what you need to do. Either this login needs a password or this login is not specified as being permitted to access the data.
To check what permissions you have for that user, run this MySQL script:
SELECT * FROM user WHERE user='www-data';
To add rights to that user (if they are missing), run this script:
GRANT SELECT ON database.* TO 'www-data'#'localhost';
This works for me.
$dbhost = 'localhost';
$dbuser = 'www-data';
$dbpass = '<PUT PASSWORD FOR HERE>';
$dbname = '<YOUR DATABASE NAME>';
$conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Could not connect: ' . mysql_error());
mysql_select_db($dbname);
I'm working through examples from a book on php/mysql development.
I'm working on a linux/apache environment.
I've set up a database and a user. I attempt to connect with this line of code:
$db_server = mysql_connect($db_hostname, $db_username, $db_password);
I get this error:
Warning: mysql_connect()
[function.mysql-connect]: Access
denied for user 'www-data'#'localhost'
(using password: YES) in
/var/www/hosts/dj/connect.php on line
3 unable to connect to database:
Access denied for user
'www-data'#'localhost' (using
password: YES)
I can only guess what is happening here:
I think www-data is a username for apache. Upon the database connection, the credentials being passed in to mysql are not those of my database user, but rather apache's own credentials. Is that what is happening here?
How do I pass in the credentials I've defined for my user ?
edit:
By the way - I do have credentials in the variables $db_hostname, $db_username, $db_password.
they are passed in by another file using require_once. If that file can't be found, then I get an error. So, I know that my username and password are being used by my script.
Both my scripts can be seen here:
http://pastebin.com/MUneLEib
#
Solved:
Thanks guys.
A couple of you pointed out that I had coded carelessy.
Also, I was particularly pleased by Neo's answer: he told me why the username of the owner of the apache process was being used.
:)
I just looked at your code! The variable with the username is $database_username but
you are using $db_username.. Change your code to:
$db_server = mysql_connect($db_hostname, $database_username, $db_password);
or you could change the line with username with:
$db_username='[your mysql user]';//or the username you created
When you don't pass anything it will be the user mysql assumes but it will not get the password so if you hadn't defined $db_password it would say: (using password:NO)
you set $database_username with you user but you are passing $db_username which is not set so the user is the linux username as default when nothing is passed with the password for the mysql user! Since there is no mysql user with that password or privileges or even with that name you are not given access!
That user is www-data which is as you guessed an apache user assigned to client-side requests!
In your login.php you use the variable $database_username, but in your connection function you use $db_username. Try matching them up.
The username goes into $db_username, and the password goes into $db_password.
All these other answers are so presumptuous, as if you don't know that $db_username means database username and same for password.
The error says that you've specified an username and password. You just specified the wrong ones. You need to use the username and password of MySQL, NOT the system username/password combination, so no, this will not be www-data. This may be root and some password, but again, these credentials are specified within MySQL, and are not (necessarily) the same as the system users and passwords.
Your MySQL installation should have a root user with a default password (which you should promptly change). There are several options: you can add an user via the MySQL command line or use an interface like cPanel or Webmin if your provider has something like this; I've used both of these and they both have easy interfaces to add new MySQL users and assign them privileges.
Also just a tip: I typically create one user per database and give the user full privileges on the database, and then use that user with the application linked to the database.
And then of course, once you create a MySQL user account and give it privileges on your web app's database, fill in that username and password into your script.
<?php
$dbhost = 'localhost';
$dbuser = 'username';
$dbpass = 'password';
$conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting to mysql');
?>
Make sure you actually assign your database login username and password to those variables before you try to connect. For example, before the line with mysql_connect():
$db_username = 'myuser';
$db_password = 'mypass123';
I'd recommend you go through a tutorial regarding MySQL and PHP before trying to go any further - just so you understand how it all works.
Try this one:
http://www.tizag.com/mysqlTutorial/mysqlconnection.php
Also, documentation is your friend:
http://php.net/manual/en/function.mysql-connect.php
The error given could mean that the privilege has not been granted, or perhaps the password is incorrect. Check that user is created and granted access, or just issue this to be sure it set to allow access on the mysql server.
$ mysql -u root -p
password:
(blah blah blah from server)
GRANT ALL PRIVILEGES ON db_base.* TO 'db username'#'localhost' IDENTIFIED BY 'some password';
If all privileges is too much, consider giving only the basic permissions needed:
GRANT SELECT,UPDATE,DELETE ON db_base.* TO 'db username'#'localhost' IDENTIFIED BY 'some password';
By the way, the server response to this statement on success is Query OK, 0 rows affected.
Your code is correct, it is saying your password is incorrect so your mysql database is rejecting the mysql connection. If you are using xampp use:
localhost
as hostname &
root
as username & in xampp there is no password so it would be
$password = ""; then $dblink = new mysqli($hostname, $dbuser, $password, $dbname);
so you can set your vars like this
<?php
$hostname = "localhost";
$dbuser = "root";
$password = ""; // means there is no password to the database
$dbname = "test"
?>
Conclusion :
if you get this as your message -
Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'www-data'#'localhost' (using password: YES) in /var/www/hosts/dj/connect.php on line 3 unable to connect to database: Access denied for user 'www-data'#'localhost' (using password: YES)
It means the password you entered is wrong or there is no password.
Stop using mysql_connect()!
You should not use this or other related functions related to this extension.
It's depreciated and removed in PHP 7.0.0 and beyond.
An alternative is using PDO or MySQLi.
Below is an example script for connecting to MySQL using PDO:
<?php
/* Connect to a MySQL database using driver invocation */
/* DSN options:
http://php.net/manual/en/ref.pdo-mysql.connection.php
Error handling options:
http://php.net/manual/en/pdo.error-handling.php
Learn how to secure against SQL injection attacks:
http://php.net/manual/en/pdo.prepared-statements.php
*/
$user = 'myusername';
$pass = 'mypassword';
$host = 'localhost';
$mydb = 'mydatabase';
$dsn = "mysql:dbname=$mydb;host=$host";
try {
$dbh = new PDO($dsn, $user, $pass);
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
?>