I am developing on mac using MAMP
I try to connect to my local mysql database from php:
$con=mysqli_connect("localhost","root","root","testDB");
this is the error I get:
Warning: mysqli_connect(): (HY000/2002): No such file or directory in
/Users/tshahar/Documents/Dev/server/test.php on line 20 Failed to
connect to MySQL: No such file or directory
To summarize, use:
127.0.0.1
Instead of:
localhost
The reason is that "localhost" is a special name for the mysql driver making it use the unix socket to connect to mysql instead of the a tcp socket.
refer this link:
click here to example
source from:1
Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.sock) in
Try using IP instead for local host that would be 127.0.0.1 or ::1 if your system does IPV6.
can't really tell you why that is but I guess the SQL won't answer to a domain name because it's configured that way.(had the same problem yesterday)
Related
after the start apache server, i could not access PHPMyAdmin. when i try to access i get an error and auto-stop MySQL server.
- mysqli_real_connect(): (HY000/2002): No connection could be made
because the target machine actively refused it.
- Connection for controluser as defined in your configuration failed.
mysqli_real_connect(): (HY000/2002): No connection could be made
because the target machine actively refused it.
- phpMyAdmin tried to connect to the MySQL server, and the server
rejected the connection..
how can i solve this error
Add below line under config.inc.php
$cfg['Servers'][$i]['port'] = 8111;
If you are on Windows os and the above solution does not work, just check if your mysql is running with "netstat -ano" command, if the services are not running just try starting the mysql service.
This question already has answers here:
Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.sock) in
(17 answers)
Closed 2 years ago.
I'm totally stuck having spent a couple of days trying to figure this out...
I have set up an Apache web server (version 2.4.34) on my Mac OS running Mojave (10.14.3) and have installed the current version of MySQL Community Server (8.0.15). Both running perfectly as I can determine (from command line). I have PHP 7.1.23 installed. When I create a .php file with the following code and put it in my Sites directory and then in Safari go to http://localhost/~dave/hello.php I get this error:
"Warning: mysqli::__construct(): (HY000/2002): No such file or
directory in /Users/dave/Sites/hello.php on line 7 Connection failed:
No such file or directory".
Code in hello.php:
<?php
$servername = "localhost";
$username = "dave";
$password = "*****";
//Create connection
$conn = new mysqli($servername, $username, $password);
//Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
I have tried everything I can think of, including those suggestions in the other two similar posts (this one: My database user exists, but I still get an (HY000/2002): No such file or directory and this one: PHP Warning: mysqli::__construct(): (HY000/2002): No such file or directory (Debian GNU/Linux 9)), and I cannot connect to MySQl with php. In particular, I checked with the php info page and the socket for mysqli is given as var/mysql/mysql.sock. In the relevant table in mysql the value for socket is given as /tmp/mysql.sock. I tried changing the php.ini.default file by adding each of these sockets (in place of the empty value) and neither worked (still generates the same error). I thought that the 2002 MySQL socket error might be the problem, so I made a symlink by doing this:
sudo mkdir /var/mysql
sudo ln -s /tmp/mysql.sock /var/mysql/mysql.sock
but all that did was generate a new error:
Warning: mysqli::__construct(): The server requested authentication
method unknown to the client [caching_sha2_password] in
/Users/dave/Sites/hello.php on line 7
Warning: mysqli::__construct(): (HY000/2054): The server requested
authentication method unknown to the client in
/Users/dave/Sites/hello.php on line 7 Connection failed: The server
requested authentication method unknown to the client
So I removed the symlink...and returned to the original error.
I also tried replacing "localhost" with the IP address 127.0.0.1 as well as "localhost:3306" as other question threads have suggested. Nothing worked here either.
Please help, I am new to this kind of use of the computer/web design and I'm out of obvious (googleable/understandable) options.
Use 127.0.0.1 instead of localhost.
I got some help from some local tech guys in my area and it turns out that fixing the socket error was the first step, like I tried to do above. I eventually did it this way, using the solution by noun:
Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.sock) in
The second error message was then generated (same one as in my question, here again):
mysqli::__construct(): The server requested authentication method unknown to the client [caching_sha2_password] in /Users/dave/Sites/hello.php on line 7
Warning: mysqli::__construct(): (HY000/2054): The server requested authentication method unknown to the client in /Users/dave/Sites/hello.php on line 7
This was fixed by the SQL-based solution (June 9 2018 answer) to this question:
php mysqli_connect: authentication method unknown to the client [caching_sha2_password]
This SQL statement was simply run in MySQL from the terminal. After restarting the Apache server I reloaded the .php file in Safari and this resulted in a successful mysqli connection to MySQL with PHP. I also tried a PDO connection and this also worked.
I'm trying to run a PHP Script that contains a MySQL connection, when I run the command I get the following error in the terminal:
'Warning: mysqli::__construct(): (HY000/2002): Connection refused'
Even with PDO, I get the error:
'Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] No such file or directory in ...'
I'm running the script on Mac OS X, and I have MAMP as APACHE/MySQL local server.
The command that I use for running the script is:
'php main.php'
and the content of the 'main.php' file with PDO is:
$db = new PDO('mysql:host=localhost;dbname=test',root,root);
with mysqli connector:
$db = new mysqli("localhost", "test", "root", "root");
I tried with '127.0.0.1' instead of 'localhost' and I get the same errors in both cases.
First of all, using localhost as a domain name is not supported in PHP. It will not be resolved as 127.0.0.1.
Second, even using 127.0.0.1 might not work in servers with multiple interfaces or with special routing rules. Run mysqlcheck --help and take the IP address shown at the bottom in the "host" field. For example:
port 3306
host 192.168.1.23
Use the IP and port that MySQL recognizes:
$db = new mysqli("192.168.1.23:3306", "test", "root", "root");
I am really a beginner in PHP and Mysql. I made a database on static IP 192.168.1.211 which is based on CentOS(only Command prompt) and on this IP there is no other software like easyPHP, and I am working on static IP 192.168.1.20 based on Windows 7. I also installed easyPHP and Dreamweaver... using Dreamweaver I made one .php file and I tried to use the database which is on 192.168.1.20..
using below code
<?php
$server2 = '192.168.1.211';
$con = mysqli_connect(server2,'root','password','vvani');
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
?>
but I get an error as shown below
Notice: Use of undefined constant server2 - assumed 'server2' in C:\Program Files\EasyPHP-DevServer-13.1VC9\data\localweb\test\welcome.php on line 4
Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\Program Files\EasyPHP-DevServer-13.1VC9\data\localweb\test\welcome.php on line 4
Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: No such host is known. in C:\Program Files\EasyPHP-DevServer-13.1VC9\data\localweb\test\welcome.php on line 4
Failed to connect to MySQL: php_network_getaddresses: getaddrinfo failed: No such host is known.
How can I access the database on 192.168.1.211 from 192.168.1.20 in PHP code?
I also tried hard to find a solution from Google, but I am not getting a perfect solution.
Just read errors and correct it..
<?php
$server2 = '192.168.1.211';
$con = mysqli_connect($server2,'root','password','vvani'); // here, $server2 is variable, not constant
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
Change server2 to $server2. If that still doesn't work then it's possible the other server does not allow requests in such a way so you will have to update the MySQL settings on that server to allow external access to the port (or otherwise forward it).
Thanks Elon Than and Explosion Pills,
I changed server2 to $server2, but I get new warning
Warning: mysqli_connect(): (HY000/1130): Host '192.168.1.20' is not allowed to connect to this MySQL server in C:\Program Files\EasyPHP-DevServer-13.1VC9\data\localweb\test\welcome.php on line 4
And I research on it and I try to give remotely access to database on another server.
Follow some few steps and solved problem.
# mysql -u root -p
mysql> GRANT ALL ON Database.* TO <un>#'localhost' IDENTIFIED BY 'password';
Thanks again.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
mysql_fetch_array() expects parameter 1 to be resource, boolean given in select
I tried to connect mysql database.but am getting the following error.
Warning: mysql_connect(): [2002] No connection could be made because the target machine actively (trying to connect via tcp://localhost:3306) in test.php on line 5
Warning: mysql_connect(): No connection could be made because the target machine actively refused it. in test.php on line 5 Warning: mysql_close() expects parameter 1 to be resource, boolean given in test.php on line 15
test.php:
<?php
$link = mysql_connect(localhost, dbuser, dbpass);
if (!$link) {
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully';
mysql_close($link);
?>
This happened to us when running a PHP & MySQL on IIS7 in Windows Server 2008 in VirtualBox. It turns out that the Windows hosts file didn't have an IPv4 entry for localhost (127.0.0.1) so the route to MySQL on localhost was not found.
We added the following to the hosts file which resolved it:
127.0.0.1 localhost # Additional IPv4 entry
::1 localhost # Existing IPv6 localhost entry
Reference: A brief description of PHP/MySQL Localhost via IPv4 & IPv6
The MySQL server isn't running, or you have a firewall blocking port 3306.
This error message means the system did not accept the TCP connection request.
In my.ini find string:
bind-address = 127.0.0.1
Change from localhost to network IP.
Got the same message trying to connect to 'localhost' by mistake (on a Windows server). After fixing the connection string to the correct (remote) server the error disappeared.