I need to open my database through PHP. But I need to know my username and the name of my host (e.g. localhost), and I don't know them.
When I used mysql and did my database, it just asked me directly for a password.
How do I find my host and username on mysql?
type this command
select CURRENT_USER();
You will get the username and server
The default username is root. You can reset the root password if you do not know it: http://dev.mysql.com/doc/refman/5.0/en/resetting-permissions.html. You should not, however, use the root account from PHP, set up a limited permission user to do that: http://dev.mysql.com/doc/refman/5.1/en/adding-users.html
If MySql is running on the same computer as your webserver, you can just use "localhost" as the host
Default user for MySQL is "root", and server "localhost".
You should be able to access the local database by using the name localhost. There is also a way to determine the hostname of the computer you're running on, but it doesn't sound like you need that. As for the username, you can either (1) give permissions to the account that PHP runs under to access the database without a password, or (2) store the username and password that you need to connect with (hard-coded or stored in a config file), and pass those as arguments to mysql_connect. See http://php.net/manual/en/function.mysql-connect.php.
This is how you can open MySQL shell
\connect root#localhost:3306
Related
I get this error message
Access denied for user 'user'#'localhost' (using password: YES)
I tried to access with the root, the admin account and some user account I made for the web visitors with a few privileges. Those users (admin and web user) were created with cPanel.
I'm testing the connection with this simple code to avoid making a mess with functional code.
<?php
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
?>
I stumbled with this explanation but it doesn't work either
Your cPanel username and password can be used to connect to your databases (as well as your cPanel). If you're connecting to your database using your cPanel username and password, you can reset your cPanel password to ensure you are using the correct username and password.
If you setup a MySQL username and password specifically for accessing a database, you'll want to ensure you are using the correct username in your php scripts. For example, MySQL usernames are always in this format:
cpanel-username_mysql-username
If your cPanel username is userna5 and you created a database username of dbuser1, then the actual database username would be:
userna5_dbuser1
Edit: i already assigned the users to a database and their privileges. I'm working on a remote server
I faced the exact same issue on one of my employees' Windows PC.
The issue was caused duo the fact that his private repositories folders including those who were used by Docker were located in C:\Users{user_name} folder.
At some point in time, Windows prevented Docker's access to these folders.
Solution: relocation the folders outside the Users folder solved the issue.
Are you running the code on your local machine or on the remote server. If it's running on your local machine you'll have to replace 'localhost' with the ip address of the server eg. '123.123.123.123'
If you are using the online server after creating the user and the database make sure you give the user privilege to access the database
If you are accessing MySQL database from the remote server, you will have to use server IP address for MySQL host. Also you will have to allow your remote server IP address in "Remote MySQL" under your cPanel otherwise you will not be able to access your database remotely.
I see the command to set up a user account on mySQL is:
CREATE USER 'userName'#'localhost' IDENTIFIED BY 'some_pass';
For the localhost, do I keep that local host if I want the user to be able to insert from another ip adress that the mySQL DB is not on?
Also if I was creating a connecting class to match the above, would it look like this:
<?php
class myConnect extends mysqli{
public function __construct($hostname='localhost',
$user='userName',
$password='some_pass',
$dbname='dbName'){
parent::__construct($hostname, $user, $password, $dbname);
}
}
?>
Again I am concerned about the localhost part in the php class above. Basically the php is not goign to be on the same server as the database.
Update:
Tried the answer below but am getting this php error still:
Warning: mysqli::mysqli() [mysqli.mysqli]: (HY000/2003): Can't connect to MySQL server on 'mySQLIP' (111) in /home4/m133414/public_html/myDigitalOcean.php on line 12
If php is installed on a different server than MySQL, you need to change localhost to whatever the IP address is that the MySQL sees the php server as. That's in the user creation. If you want it avaiable from anywhere, change localhost to '%'
In php, in place of localhost, put the IP address of the MySQL server.
If your PHP server has a separate IP address or host name than the MySQL server, use the PHP server's IP/hostname in the grant statement
CREATE USER 'userName'#'php.server.ip.goes.here' IDENTIFIED BY 'some_pass';
If you want users to be able to connect to your server from anywhere, you can use a wildcard:
CREATE USER 'userName'#'%' IDENTIFIED BY 'some_pass';
though this is generally insecure.
You should use 'localhost' if you want users to be able to connect to your server only from the same IP/host as your MySQL server. This would be appropriate in situations where your webserver is on the same host as the MySQL server.
Mysql is very picky about user account string formatting, and in particular treats the hostname 'localhost' as special (and exactly how depends on the version).
If the hostname is 'localhost' then many mysql versions will use a local Unix Socket (and not TCP/IP) to connect. If you use a DNS name such as mysql.server.example.org, be aware that you need to include exactly the string mysql sees on connect: it's not 'intelligent' in saying 'mysql' is the same thing, for example.
Be aware also that creating a user does not give it permission to do anything. You will normally need to use GRANT to do that as well. You can grant permission to the whole server (not recommended!) or to all tables in a database, or even to individual tables. I would strongly recommend testing using 'phpmyadmin' to investigate this if needed.
Finally, I'm just slightly worried that you are conflating user-of-mysql and user-of-application. Normally, the mysql user table is not used for application level users (e.g. website profiles). I say this because DB user creation is often a one-off thing and so doesn't need application code to do it...
This is the error I get when using php code
"mysql_connect($host,$user,$password)", where $host="IP_of_my_system" :
Warning: mysql_connect(): Host 'xxx' is not allowed to connect to this MySQL server in C:\xampp\htdocs\mysqltest\insert.php on line 4
But when using localhost instead of IP, it works fine.
Why is this behavior?
Its quite simple if you understand how Userid's work in MySQL.
Each userid has a location associated with it from where that userid is allowed to logon from. This can be from anywhere % but normally its an ip address or set of ip addresses.
So the userid you are using is probably setup to be allowed access from localhost and 127.0.0.1 and maybe ::1 all of which are ways of addressing the PC that the MySQL Server is running on.
These should suffice so use localhost or 127.0.0.1 or change the userid definition in MySQL to be allowed to acess from 192.168.0.99 or whatever you ip address is, but using one of the alias's for this PC should be all you need.
Using the alias's also helps when you move your code to another machine and/or MySQL server. I fyou use a specific IP it probably wont.
Please Mention the port no like 192.168.0.1:3306 ( by default mysql port ) in $hostname.
For server port no contact your server administratior
Two possible reasons for your problem:
1) Your firewall is blocking IP_of_my_system:3306
2) you haven't configured proper access in MySql.
For the item #1, check your system.
For the #2, in Workbench, enter as administrator of your database.
Then, click on "Users and Privileges". In this page, you must grant to your user (MySQL user, not Windows user!), the permissions to login from an address or a network. This permission is "per host" and "per schema". In the following image, you can see that the user "testmvc" may login form any host (%) and from localhost:
In the next image you can see the "Schema Privilege" tab:
where you can see that the user "testmvc", from any host (%) may access the "testmvc" schema with the specified privileges.
The combination of access and privileges grants your user to access the MySQL server and operate on it.
I had a similar problem and only worked solution is creating a new user with same specification as old user. Strange, but hope it helps someone else with the same problem.
What possible reasons could exist for MySQL giving the error “Access denied for user 'xxx'#'yyy'” when trying to access a database using PHP-mysqli and working fine when using the command-line mysql tool with exactly the same username, password, socket, database and host?
Update:
There were indeed three users in the mysql.user table, each one with a different host (but with the same hashed password), one was set to localhost, one to 127.0.0.1 and one to the machine’s host name. Deleting two of them and changing the host of the third to “%” had only one effect: now the access is denied using the command-line tool also.
I did do a
select user();
before that in the command line and it yielded the same xxx#yyy that were denied in php.
Sometimes in php/mysql there is a difference between localhost and 127.0.0.1
In mysql you grant access based on the host name, for localusers this would be localhost.
I have seen php trying to connect with 'myservername' instead of localhost allthough in the config 'localhost' was defined.
Try to grant access in mysql for 127.0.0.1 and connect in php over 127.0.0.1 port 3306.
In case anyone’s still interested: I never did solve this particular problem. It really seems like the problem was with the hardware I was running MySQL on. I’ve never seen anything remotely like it since.
After I read your update I would suspect an error in/with the password.
Are you using "strange" characters in your PW (something likely to cause utf-8/iso encoding problems)?
Using % in the Host field would allow the user to connect from any host. So the only thing that could be wrong would be the password.
Can you create another user. whith the "grant all on all for '...'#'%' identiefied by 'somesimplepw'" syntax, and try to connect with that user?
Don't forget to 'flush privelidges'
For info on how to create a new user klick here
Today the FTP service of my web hosting provider is having some trouble, so I decide to realize a local virtual webserver for working on my website. I have installed EasyPHP 14.1 with phpMyAdmin and I have created my user and my database with tables.
First attempt: failed. I realized that the table I was looking for didn't exist. -> I solved creating the missing table.
Second attempt: failed. I realized that username that I set for my new user was diffrent from the username I used for my connection. -> I edited username.
Third attempt: failed. I realized that new database name was diffrent from database name I use for connection in my site. -> I edited db name.
Forth attempt: failed. I realized that between privileges of my new user there wasn't "Grant". I don't even know what "Grant" means, but let's try to enable it -> Added "Grant" privilege.
Fifth attempt: I win!
I hope my little adventure could help someone. =)
Help!
I have a PHP (PHP 5.2.5) script on HOST1 trying to connect to an MySql database HOST2. Both hosts are in Shared Host environments controlled through CPanel.
HOST2 is set to allow remote database connections from HOST1.
The PHP connect I'm using is:-
$h2 = IPADDRESS;
$dbu = DBUSER;
$dbp = DBPASS;
$DBlink = mysql_connect($h2, $dbu, $dbp);
This always fails with:-
Access denied for user '<dbusername>'#'***SOMESTRING***' (using password: YES)
nb: SOMESTRING looks like it could be something to do with the shared host environment.
Any ideas???
BTW: I can make remote connections to HOST2 from my laptop using OpenOffice via ODBC, and SQLyog. The SQLyog and ODBC settings are exactly the same as the PHP script is trying to use.
somestring is probably the reverse-lookup for your web-server.
Can you modify privileges from your cPanel? Have you done anything to allow access from your workstation (ODBC)?
The error-message seems to indicate that you have network-access to the mysql-server, but not privileges for your username from that specific host.
If you're allowed to grant privileges for your database, invoking:
GRANT SELECT ON database.* TO username#ip.address.of.host1 IDENTIFIED BY 'password'
might work for you. I just wrote this out of my head, you might want to doublecheck the syntax in mysql-docs.
Have you read the MySQL documentation on Causes of Access denied Errors?
Have you contacted support for your hosting provider? They should have access to troubleshoot the database connection. People on the internet do not have access.
Do you need to specify the database name? Your account might have access to connect only to a specific database. The mysql_connect() function does not allow you do specify the database, but new mysqli() does. I'm not sure if this is relevant -- it might allow you to connect but give you errors when you try to query tables that aren't in your database.
Are you sure you're using the right password? MySQL allows each account to have a different password per client host. Admittedly, this is not a common configuration, but it's possible. Your hosting provider should be able to tell you.
Just some ideas:
HOST1 does not have remote access to HOST2 (shared host is disallowing)
MySQL account does not have access from HOST1 (IP address specified on account creation, or wildcard)
Edit:
In response to your comment, I meant that HOST1 cannot get to the MySQL port on HOST2. Web services will work, of course, because port 80 is open to the public. As another user pointed out though, you are getting a response, so you are reaching it. I would try specifying the DB, and double checking the account creation command you ran.
For the second piece, I meant this: http://dev.mysql.com/doc/refman/5.0/en/adding-users.html
You can specify what host the username can connect from. If it isn't set to HOST2's IP or the wildcard, HOST2 can't log in with those credentials.
The error message means that you can contact the mySql server, but the user you are trying to log in as, does not have access.
Either the user does not have access at all, or it has access locally, but not from the host you are connecting from.
You should try to use the hostname and port like $h2 = IPADDRESS:3307;