This sounds like a stupid question, but I'm beginning in PHP and MySQL and failing at the first step, trying to connect to the database:
<html>
<head>
</head>
<body>
<?php
$con = mysqli_connect("localhost", "root", "root", "ASOIAF.odb");
if (mysqli_connect_errno()) {
echo "Failed to connect to database";
} else {
echo "Connected to database";
}
mysqli_close($con);
?>
</body>
</html>
I don't understand the first host parameter. A yahoo help page said that the host should be "mysql", but when I used this it failed to connect as well. The database, ASOIAF, is in OpenDocument database format (odb), on LibreOffice Base. I'm using Uniserver to run PHP and MySQL; both are currently running. The web application is stored in Uniserver's www folder, and run on Google Chrome through localhost.
What should I be inserting in the host portion of the connect statement? Or have I made a more basic syntax error in the PHP code that is preventing a connection from being made?
What is my host name for MySQL?
We don't know what you have called the computer you are running MySQL on.
A yahoo help page said that the host should be "mysql"
That is specific to Yahoo Web Hosting. It doesn't sound like you are using their service, so that is inapplicable.
I'm using Uniserver to run PHP and MySQL
That suggests the computer running the webserver running PHP and the computer running the MySQL server are the same machine. That makes localhost appropriate.
localhost is the standard name given to a computer on the private network that only it connects to. For MySQL is has a special meaning and causes the connection to be made via a socket instead of TCP/IP (which is more efficient).
What should I be inserting in the host portion of the connect statement?
localhost if the above is correct.
Or have I made a more basic syntax error in the PHP code that is preventing a connection from being made?
I can't see any syntax errors. I suspect the problem may be down to your database configuration. Have you told the MySQL server about ASOIAF.odb? Is that what the database is actually called inside MySQL (as opposed to just being the file that stores the configuration for LibreOffice to connection to that database).
Your biggest mistake is not using mysqli_error to find out what problems PHP is reporting.
if (mysqli_connect_errno()) {
echo "Failed to connect to database";
echo mysqli_error();
use
mysqli_connect("localhost", "root");
Hope it will work
Related
This question already has answers here:
PDO::__construct(): Server sent charset (255) unknown to the client. Please, report to the developers
(12 answers)
Closed yesterday.
Hi I am trying to host PHP code in AWS EC2(Windows) server on IIS.
I am able to host the php webpages but the issue is the the webpages are not able to communicate to AWS RDS.
PHP Code for Database:
<?php
$con=mysqli_connect("mysqldatabase.xxxxxxxxxx.ap-south-1.rds.amazonaws.com", "admin", "xxxxxxx", "detsdb", "3306");
if(mysqli_connect_errno()){
echo "Connection Fail".mysqli_connect_error();
}
?>
I am using default VPC rule and in both RDS and EC2 Security Group(Both Inbound and Outbound) I have opened all traffic as well as Opened SG id with port 3306 with each other.
**Error on Webpage: Connection FailServer sent charset unknown to the client. Please, report to the developers **
When I am trying the same code from my personal computer, I am able to communicate with RDS.
I am using Wamp server to communicate and host it locally.
written a simple code to test the functionality that's also working:
<?php
$con = mysqli_connect("mysqldatabase.xxxxxx.ap-south-1.rds.amazonaws.com", "admin", "xxxxx", "detsdb", "3306");
if($con){
echo "Connection Success";
}
else
{
echo "Error";
}
?>
Please help me on this.
Edit: Screenshot attcahed for both Ec2 and RDS SG
On the windows server make a .txt file, then rename the extension to .UDL open the file and use it as a quick way to test the connection.
Next follow this fix:
PDO::__construct(): Server sent charset (255) unknown to the client. Please, report to the developers
If this fails create a second RDS DB in a private subnet and test John's advice about DNS resolving to private IP using the UDL file.
Go to the server and try to connect RDS directly and check whether you can able to access or not.
Basically Its a parameter group issue: so what i did was: Created a new Parameter group and then edited them. Searched all character-set parameters. These are blank by default. edit them individually and select utf8 from drop down list. character_set_results, character_set_server and SAVE.
Now you can able to connect
I'm creating a web application in PHP and I need to connect to a database and retrieve information from it. The database in question is being hosted on phpMyAdmin. I'm currently using the following PHP code to connect to it.
//Attempt to connect to the database
$conn = mysql_connect('localhost', 'my_username', 'my_password') or die (mysql_error());
//Tell the user if they were successful
echo "Connection successful!";
//Close the connection
mysql_close();
When I run the website, it produces the following SQL error:
"No connection could be made because the target machine actively refused it."
I'm sure that my username and password are spelled correctly and I believe that 'localhost' is the server name that I need to use. Is there a different mysql_connect command that I need to use for phpMyAdmin? If not, how can I solve this problem?
Edit:
Upon publishing the website to Microsoft Azure (where I need to host it), I've found that it produces a different error:
"An attempt was made to access a socket in a way forbidden by its access permissions."
How will I be able to fix this error? Or will fixing the original error also solve this one?
Do not use mysql_* functions. They are deprecated. For more information, see this question: Why shouldn't I use mysql_* functions in PHP?
phpMyAdmin hosts nothing; it is simply a PHP application that connects to your database just like your own app is attempting to do.
Take a look at the phpMyAdmin config file and ensure you are using the same host. Also try the same username/password. If this succeeds, it's advisable to set up a dedicated username/password for your application. This can be done within phpMyAdmin on the privileges page.
Try use IP instead of localhost.
User has permissions? Check them
Trying to figure out how to connect to a local SQL Server with an online PHP file. However I am getting connection errors.
Warning: mysql_connect() [function.mysql-connect]: [2002] No
connection could be made because the target machine actively refused
it. (trying to connect via tcp://localhost:xxxx) in
E:\web\example.com\uploads\readDB.php on line 8
In particular I am having trouble trying to specify if, and where, I do the connection to the PC and then to the database with any associated passwords.
My current connection looks like this
mysql_connect("localhost","the_sql_server_name\SQLEXPRESS","mysql");
mysql_select_db("ACME") or die(mysql_error());
$data = mysql_query("SELECT * FROM TradingAccount")
or die(mysql_error());
My server is run locally (sql server studio management 2012), and I am trying to connect to its specific DB called ACME, from the table TradingAccount.
Can someone show me how to connect to this local table successfully with PHP? I use Windows Authentication at the moment when I run the server as well, in case that matters.
I haven't been able to find any useful resources, and I have only ever used PHP to connect to online DB's as well, nothing locally before.
Your Problem is in this line:
mysql_connect("localhost","the_sql_server_name\SQLEXPRESS","mysql");
You wrote the_sql_server_name\SQLEXPRESS there. I don't understand why. The syntax of the method is:
mysql_connect("hostname", "username", "password");
For more information, visit the PHP manual entry for mysql_connect.
I am running an apache webserver on a server on my local network.
I have a microsoft SQL server 2008 r2 database running on a different machine on the same network. My webserver is hosting a lot of pages, and are all fine and can be accessed locally and externally. However, when I try to connect to the SQL database using php, I get hit with the following error.:
Failed to connect to MySQL: No connection could be made because the target machine actively refused it.
I am at a total loss at this point as I have opened port 1433 and have spent hours trying to figure this out.
The code that I am using is a very basic connect script:
<?php
// Create connection
$con = mysqli_connect("mycomputer", "myname", "password", "my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
?>
If anyone can help, I would sincerely appreciate it as iIam about to give up on this project!!!
Thank you in advance.
As i understand - you use MS SQL , so you must use mssql_connect not as mysqli_connect
Check here
Cause its another database and another driver (extension ) using to connect
I'm pretty new at php and I'm getting an error whenever I try to load a php page that requires access to the database I set up on phpMyAdmin
Here is the error:
Database connection failed: Can't connect to local MySQL server
through socket '/tmp/mysql.sock' (46) (2002)
The code I'm using for the connection is this:
<?php
define("DB_SERVER", "localhost");
define("DB_USER", "xxxx");
define("DB_PASS", "xxxx");
define("DB_NAME", "tester");
$connection = mysqli_connect(DB_SERVER, DB_USER, DB_PASS, DB_NAME);
// Test if connection occurred.
if(mysqli_connect_errno()) {
die("Database connection failed: " .
mysqli_connect_error() .
" (" . mysqli_connect_errno() . ")"
);
}
?>
I set up phpMyAdmin on my server by following the directions from the site that hosts my website, so I'm pretty sure I did that correctly.
I've been able to get databases to work before on my computer by using WAMP, but this is the first time I've actually tried getting everything working online, so I don't know if this is a stupid error on my part, or if it's something bigger.
I don't know what a socket is either so I'm not sure how to troubleshoot this.
Thanks for your help!!
You have to find a way to connect to your MySQL instance. There are two ways, TCP (networking, even if that network address is 127.0.0.1) and sockets (a file such as /var/run/mysqld/mysql.sock). Generally, MySQL is configured out of the box to listen on both, and again in general there's little difference between the two. You have to be careful when creating or editing permissions that they match the connection type, user bob#localhost is different from user bob#127.0.0.1. I tend to use sockets and that's also what your script is trying to do by default. You could tell it to connect via TCP, but it's just as easy to tell it the proper path to the socket.
Anyway, for me the quickest way to figure it out is to try the command line tool. If you can do mysql -u root -p at the command line and get a MYSQL> shell prompt, type in "STATUS" and look for the Connection line, which might read Localhost via UNIX socket; and a bit further down you might see a line like "UNIX socket: /var/run/mysqld/mysql.sock" in which case you just tell your PHP script or global PHP configuration about the socket path, because right now it's looking in /tmp/mysql.sock which doesn't exist.
You can also see this when you log in to phpMyAdmin, it should display on the right hand side of the page some "Database Server" information -- look here for the "Server" line which might read something like "phpMyAdmin demo - MySQL (192.168.30.23 via TCP/IP" (a clear indication you're connecting over TCP).
Anyway, whichever method you use to find the path to the socket or deciding to use TCP networking, see the PHP manual page for information about using that to connect. You can also just set the global path in php.ini for the socket (which is what I'd suggest you do), then you don't have to set it manually in each script as it just uses the php.ini setting as a default. You may need to set each of the values for pdo_mysql.default_socket, mysql.default_socket, and mysqli.default_socket (though in your code you're only using mysqli, so technically you only need to set the last value...but why risk confusing your future self with questions like "why would mysqli work but pdo fail?" -- just set them all now and don't worry about it).
Hope this helps.
That either means you don't have the privileges to access phpMyAdmin or that socket isn't there. Try reinstalling phpMyAdmin.