I'm new to php, and while trying to make a connection on one of my pages to the database I set up on the phpMyAdmin page of my site.
I get this error:
"Database connection failed: Can't connect to local MySQL server
through socket '/tmp/mysql.sock' (46) (2002)"
I don't know what a socket is, or why it's trying to go to what looks like a temp file, so I don't even know where to being to troubleshoot this.
The code I'm using to make the initial 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 know I should have access to the MySQL databases, since I logged on and made them myself.
I previously set the page up by using WAMP on my computer, and everything worked fine.
It's just when I tried making it live on the site that I ran into this error.
Any help would be awesome!!
Try using 127.0.0.1 instead of localhost.
If that does not solve it, and you have root access to your server, try the following command
service mysql restart
To restart the mysql server.
The first option will probably work. Again, if you have root access to your server, you should change the mysql config to support sockets, since it's better than the TCP-ip connection.
After contacting my hosting service several times, it seems the error occurred because my hosting service recently changed their specifications and now uses "mysql" instead of "localhost" in the host and server fields. I had used "localhost" before with another host service, so I didn't think to change this, and the latest help articles on my host's website had not updated to reflect this.
Related
I created a php website and host it online by using Heroku recently. However, I couldn't connect my database because I use localhost phpmyadmin database from my online site. How should I connect my localhost database from my online site? Or how to make my host my database online, and then make the connection? Here is my db.php file to make the connection with mysqli, in case if there's any need to tweak the db connection PHP codes.
//step 1: Establish database connection
DEFINE("DB_HOST", 'localhost');
DEFINE("DB_USER", 'root');
DEFINE("DB_PASS", '');
DEFINE("DB_NAME", 'my_db_name');
// Create connection
$con = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
// Set charset to UFT8
mysqli_set_charset($con, "utf8");
// Check connection
if (!$con) {
die("Connection failed: " . mysqli_connect_error());
}
If you are hosting your database on your local machine, whilst having a webserver that needs to connect to your database, you will have to make sure your database can be accessed by another machine. The host is only ‘localhost’ if the Local IP is identical for the machine and database. Your db.php is correct and will function properly, as long as you ensure that the connection details are correct, since localhost is not correct there will be errors.
You might want to look into how to portforward depending on what database software/installation you are using. Or look into whether your host offers database solutions sch as or similar to PhpMyAdmin (in case of most webhosts).
I'm trying to connect to a remote MySql database and I get this error message:
Warning: mysqli_connect(): (HY000/2002): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. in C:\myLocalDiectory\RemoteConn.php on line 9 "Resource not found" error 404.
Here's my php file that I'm trying to use:
<?php
define("DB_SERVER", "serverName");
define("DB_USER", "userName");
define("DB_PASS", "password");
define("DB_NAME", "dbName");
$connection = mysqli_connect(DB_SERVER, DB_USER, DB_PASS, DB_NAME);
if(mysqli_connect_errno()) {
die("Database connection failed: " .
mysqli_connect_error() .
" (" . mysqli_connect_errno() . ")"
);
}
?>
Am I missing something? Thanks for any help!
The first thing that I would check (if you haven't done so) is that you can in fact connect to the database from the computer that runs your PHP script. This to rule out a network or firewall problem.
The first thing would be pinging the server. In a DOS prompt run:
ping servername
Where "servername" is the same string that you put in your PHP script above. If this does not reply with a string similar to the one below, specifically, the first word is not "Reply":
Reply from 192.168.239.132: bytes=32 time=101ms TTL=124
This means that there is most likely no connectivity between the computer running the PHP script an the mysql server. I would then check if the server and the computer are properly connected to the network, if the server is up, an if there is not firewall in your computer running the PHP script or on the server.
Now, if your test above shows "Reply" to the ping, you can test if you can connect to the Mysql service from your php server. For this you can use Mysql workbench (http://dev.mysql.com/downloads/workbench/) and from there create a connection with the database parameters that you are giving to your script. If you cannot connect with Mysql workbench, you might need to disable a firewall in your Mysql server, a firewall in your computer running PHP, or enable the Mysql server to accept remote connections for the database and username that you use in your PHP script (some distributions Mysql server are installed to only accept local connections for safety).
If the problem is a permission in the server (the user can only connect locally but not from a remote computer for instance), you can enable the permission in the Mysql server with the GRANT command: http://dev.mysql.com/doc/refman/5.1/en/grant.html
define("DB_USER", "userName");
Try root instead of userName and define DB_HOST.
This may be a stupid question, but I've been following a tutorial online for learning php and I'm using an exercise file from it that is a sql file. The instructor set up a username and password when the database was set up in the MySQL console in WAMP. I know it works this way, but now I'm trying to test it out in a different way by importing it into phpMyAdmin on my server, but I get an error when trying to connect.
It says the database connection failed because I don't have access to the "local MySQL server", and mentions a socket that it's trying to connect through (I'm not sure what that means). I'm wondering if it has something to do with the username and password I am using. Would that carry over in the file I uploaded from the lesson? I tried using the username and password the instructor used, and then I tried using the one I use for logging on to the phpMyAdmin page, but I got the same error both times. Is there another way to set a username and password or I am completely off and the problem lies somewhere else?
Here's the code I use to establish the connection:
<?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);
?>
Thanks for your help!!
Edit: the exact error I get is
"Database connection failed: Can't connect to local MySQL server
through socket '/tmp/mysql.sock' (46) (2002)"
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.
Hi to all php and mysql experts,
I try to find some help or 'tutorial' or similar question/answer for my problem but it was unsuccessful.
I have install TurnKey Linux, php, mysql, successfuly width ip address: 172.##.##.## and I can connect to this server from another comp.
I was edit my my.cnf file, I was open port 3306 and I can connect via mysql -u root -p -h 172.##.##.## from another comp. I was add user:root that can connect from any host or IP address. Also I can make successful connections width mysqladmin or mysql workbench.
I can, also, make database and some tables on this server like db_test, tab_test etc. and if I use next script on this server its work very good:
<?php
$db_hostname="localhost";
$db_username="root";
$db_password="pxxxxx";
$db_connect=mysql_connect($db_hostname, $db_username, $db_password);
if (!$db_connect) {
die('Could not connect: ' . mysql_error());
}
mysql_close($db_connect);
?>
But if I use next script it does not work and report to me error: Could not connect: Lost connection to MySQL server during query;
<?php
$db_hostname="172.##.##.##";
$db_username="root";
$db_password="pxxxxx";
$db_connect=mysql_connect($db_hostname, $db_username, $db_password);
if (!$db_connect) {
die('Could not connect: ' . mysql_error());
}
mysql_close($db_connect);
?>
Also this script it does not work if I use another php server witch can see or ping this server.
Can somebody help me to resolve this problem! Please. I am desperate.
I have the same error, please go to xampp\phpMyAdmin\libraries\config.default.php
Modify the following code
existing one - $cfg['ExecTimeLimit'] = 300;
modify to - $cfg['ExecTimeLimit'] = 600;
This is getting a bit long for a comment....
It doesn't appear to be a connection error - that's a different error message.
Changing the configuration of PHPMyAdmin is not going to make any difference to other scripts.
It might help if you publish details of the mysql config from PHP. Also is your mysqld started with skip-name-resolve? How long does your example script take to fail?
One thing to watch for is that when the mysql client sees 'localhost' in the conection string, it tries to connect via a filesystem socket - not a network socket - do you get the same error when you supply the host as 172.##.##.## ?