I have a Linux server with:
MySQL 5.1.57
PHP 5.1.6
When I try to connect MySQL- The output is a blank page.
The code is attached.
<?php
$link = mysql_connect("localhost", "usr", "pass");
if (!$link) {
die("Could not connect: " . mysql_error());
}
print "Connected successfully";
Btw do you enable mysql module for php? You can check with this command
php -i | grep mysql
or see in web
<?php phpinfo(); ?>
And check PHP error log.
Most likely you don't have the php_mysql extension installed, so it doesn't understand what you're trying to do. To be sure about that, check your web servers error log. It should tell you why it didn't parse the page.
But as Quentin already mentioned in the comments, the mysql extension has been deprecated for quite a while now. Try installing the MySQLi or PDO extension and use that instead. PDO is more flexible and offers prepared statements support, so I'd suggest that.
So, install the PDO extension on your server (see the documentation for more details). And then connect using something like this instead:
$dbh = new PDO('mysql:host=localhost;dbname=test', 'user', 'pass');
This will connect you to the test database on your localhost. More information can be found in the PHP docs here.
Related
I want to run a script that successfully connects to a database. I have xampp, both programs running, I have created a database within phpMyAdmin named "testing" with a user login "root" and password "root" (just for this).
The PHP code:
mysql_connect("localhost", "root", "root") or die("<p>failed: " . mysql_error() . "</p>");
I have no idea what is supposed to go into where "localhost" is and can't find an answer. I've tried several different options. Including pointing directly to the damn thing "localhost/xampp/mysql/data/testing".
The first parameter to mysql_connect is the host for your MySQL server. Since you are developing locally, localhost or 127.0.0.1 is probably what you want, unless you want to connect to a remove MySQL server. Both of these addresses will loopback to your own computer, where you should be running your MySQL service.
Also, you may want to consider using MySQLi or PDO. mysql_connect and the related functions are deprecated in PHP 5.5.
localhost is your own machine. If you're using Xampp you most likely won't need to change it.
Besides from opening a connection to the db host, you still need to select a database name (the one you created with phpmyadmin)
mysql_select_db('testing');
Since you're just starting I don't want to annoy you with the rant about the old mysql_ functions to be deprecated. But once you get the basics, try to switch to PDO mysql, the learning curve is the same and you'll avoid wasting your time.
Note that the MySQL extension has been deprecated since PHP 5.5 in favor of PDO MySQL or MySQL Improved.
Using for example MySQLi, in your case the connection statetement should read:
$mysqli = new mysqli("localhost", "root", "root", "testing");
if ($mysqli->connect_errno) {
echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;
}
More information here.
I've read a ton of threads and solutions, I'm not purposely trying to make yet another one of these posts.
Now that thats out of the way
if i run this in my local osx folder (with web sharing on), i get a could not connect error:
<?php
$db = mysql_connect("localhost", "root", "password");
if (!$db) {
die('Could not connect' . mysql_error());
}
echo 'Connected successfully';
yet when i go to terminal and run the following it works fine:
mysql -u root -h 'localhost' -p
password<enter>
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1030
Server version: 5.5.25a MySQL Community Server (GPL)
i have updated php.ini to point to /tmp/mysql.sock as well
If you're just starting out and are using PHP5, you should not use mysql_connect, but instead mysqli_connect (use of the mysql extension is discouraged).
Check connect_error to get more information about why the connection is failing.
(Example taken from the above doc)
<?php
$mysqli = #new mysqli('localhost', 'root', 'password', 'THE DB NAME');
// Works as of PHP 5.2.9 and 5.3.0.
if ($mysqli->connect_error) {
die('Connect Error: ' . $mysqli->connect_error);
}
Try to display your php configuration with a phpinfo();, you might learn a lot from that.
Also, check the port number used by MySQL, I've seen many example where it wasn't standard on OSX installation.
Using ubuntu 12.04 64 bit on Lenovo t410.
Using apache2 and Mysql 5.5 and attempting to connect via localhost
I am attempting to establish a connection to a database that I made on localhost. When the line of code is reached to establish a connection, it seems Mysql simply hangs, and there is no error message displayed after. I verified that an echo works immediately prior to the connection attempt. I know that apache2 server is working as I can access the index page and display my html form.
I have tried etc/mysql/my.cnf setting the bind address to localhost.
My line of code looks like:
// Attempts to establish connection to MySql server
$connection = mysql_connect("localhost","username","password");
// Prints error message if the connection to MySql fails
if (!$connection){
die("Connection failed: " . mysql_error());
}
echo "Connection established.";
I tried the connection line with single quotes and with no semi-colon as well.
I am willing to post the contents of any configuration file I have if the error isn't syntax. I haven't done anything fancy to Ubuntu, everything is the default install. I am new to CS and especially databases, PHP, and networking. This is my little experiment that I am stuck on.
Any help is greatly appreciated. Thanks,
Don
Can it be, because there is no error message, that the connection IS established, but you didn't do anything with it?
I mean, what is the rest of your code, is there after your code here something like:
mysql_select_db("database_name",$connection);
After reading your last comment, it appears the mysql extensions are not being loaded. Have a look at your php.ini, uncomment the following line (remove the semicolon at the beginning of the line) and restart your apache:
extension=php_mysql.so
Make sure the extension exists in the php extensions directory.
Due to the fact that you are using MySQL version > 4.1.3 it is strongly recommended that you use the mysqli extension instead. Have a look at this: PHP: MySQL Overview
try to set
$mysql_user = "your_username";
$mysql_pass = "your_password";
$mysql_server = "Servername";
$link = mysql_connect($mysql_server,$mysql_user,$mysql_pass);
if (!$link) {
header('HTTP/1.1 500');
exit();
I'm trying to connect SQL Server 2005 using PHP. I searched in Google but am not getting proper solution, it's showing search results about mssql_connect() is not working properly. By seeing this am not getting anything.
require_once 'login.php';
$db_server = mysql_connect($db_hostname, $db_username, $db_password);
mysql_select_db($db_database) or die("Unable to connect to database: ".mysql_error());
This will connect mysql database. I tried replace mysql_connect() with mssql_connect(). But its not working. login.php has
$db_hostname = 'localhost';
$db_database = 'urlstore';
$db_username = 'root';
$db_password = 'tiger';
How can I connect SQL database using PHP.
You need to install MS SQL PHP extensions and then you can work with your MS SQL Server the way you are used to.
Here is the information about the extension and how to install it.
You could use PDO if your server configuration supports it. PDO is an abstraction layer that allows you to connect to many different database types using the same object.
<?php
try {
$dbh = new PDO ('mssql:host='.$mssql_server.';dbname='.$mssql_db, $mssql_login, $mssql_pwd);
$dbh->exec("INSERT INTO tablename(column1, column2) VALUES ('stuff', 'here')");
$dbh = null;
}
catch (PDOException $e)
{
echo $e->getMessage();
}
?>
This code can help you determine if PDO is enabled:
<?php
foreach(PDO::getAvailableDrivers() as $driver)
{
echo $driver.'<br />';
}
?>
OR you can run this:
<?php phpInfo(); ?>
and look for this:
PDO
PDO support PDO drivers
enabled dblib, mysql, odbc, pgsql, sqlite, sqlite2
If it isn't enabled for MSSQL, you can uncomment the "extension=php_pdo_mssql.dll" line in php.ini.
If it still doesn't work, you might want to try this:
ntwdblib.dll - The most common issue is that you do not have the
ntwdblib.dll file installed in your PHP directory (where php.exe is,
or sometimes placing it in the ext directory works as well). This
library can be found with your Enterprise Manager dll's or in your SQL
servers system32 folder. It's generally best to take the file from the
server where SQL Server is installed
-quoted from http://www.helpspot.com/helpdesk/index.php?pg=kb.page&id=13
I installed php and mysql on a Windows 2003 server running IIS6. I uncommented the lines for the mysql and mysqli extensions. I am able to run phpinfo, and am seeing the mysql and mysqli sections in phpinfo.
I then run the following code to attempt a connection to the database -
<?php
$link = mysql_connect('localhost', 'root', 'mypassword');
if (!$link)
{
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully';
mysql_close($link);
?>
When I attempt to load this through a browser, I am getting a generic 500 server error. I don't know where else to look to troubleshoot this issue. Can someone point me in the right direction?
I am also able to access the mysql database using mysql workbench on the server.
Thanks for any thoughts.
I solved this by referring to this post - PHP has encountered an Access Violation at 77FCAFF8
Ultimately, I uninstalled MySql and then reinstalled at the root of my filesystem in order to eliminate any spaces in the path. I then recycled my application pools, and am now able to connect.
thanks.