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Sometimes you may need to connect your PHP driven website to a database. In most instances content management systems this is done through the config.php file. Below is a sample PHP script that connects to a database and shows all the fields for a specific table you specify in the code.

Important! In order for the database connection to work, you will need to create the database, add the database user, and be sure that you attach a MySQL user to the database before attempting to run the script on the server.

If you need to run a database script on your local computer, you will need to set up your computer to run Apache, MySQL, and PHP. You can do this by installing WAMP (Windows), MAMP (Mac), or XAMPP.

//Sample Database Connection Script 
//Setup connection variables, such as database username
//and password
$yourfield = "your_field";
//Connect to the database
$connection = mysql_connect($hostname, $username, $password);
mysql_select_db($dbname, $connection);
//Setup our query
$query = "SELECT * FROM $usertable";
//Run the Query
$result = mysql_query($query);
//If the query returned results, loop through
// each result
  while($row = mysql_fetch_array($result))
    $name = $row["$yourfield"];
    echo "Name: " . $name; 
} } ?>

So let's take a look at the actual code and what you need to replace:

$hostname: This almost always refers to 'localhost' unless you are connecting to an external database.

$username: This is the MySQL user you want to connect with. Keep in mind the user must be assigned to the database.

$password: This is the password for the username you just entered in.

$dbname: This refers to the database name you wish to connect to.

$usertable: This is not needed to connect but in this script it refers to a specific table within the database.

$yourfield: This is not needed to connect to the database but tells the script which field to echo to the screen.

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Related Questions

Here are a few questions related to this article that our customers have asked:
How do I connect to a MySQL Database with PHP?
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n/a Points
2014-04-14 10:36 am




connect mysql exactly

define ("DB_HOST", "localhost");

define ("DB_POST", "");

define ("DB_USER", "root");

define ("DB_PASSWORD", "");

define ("DB_NAME", "");




class Db {

      static $connection  = NULL;

public function __constructe (){


    if (!isset(self::$connection)){

    self::$connection = mysql_connect (DB_HOST.":" . DB_POST, DB_USER, DB_PASSWORD);

    mysql_select_db( DB_NAME , self::$connection);

    mysql_query ( " SET CHARACTER SET utf8 ") or die (mysql_error());






public function qurery ($query){

        $data = mysql_query($query,self::$connection);

        if (is_bool($data)) return array;

        $rows = array();

        while ($row = mysql_fetch_assoc($data)){

        $rows[] = $row;


        return $rows;










class Result extends {

     private $_table = "name_table";

     public function __construct(){



     public function select (){

     $query = " SELECT * FROM " . $this->_table;

     $select_table = $this->query($query);

     return $select_table;









     $data = new Result();

     $select = $data->select();


11,186 Points
2014-04-14 10:45 am
Your question is a bit unclear. Could you clarify what we can assist you with?
n/a Points
2014-04-16 10:04 am

I want to ask you, is there a standard way to connect database and correct, 

I see a lot of connection types and display data, the standard way with php and mysql not, ?

 as I have presented is called the standard php mysql not ?

Best Regards,

25,274 Points
2014-04-16 12:08 pm
Hello Viet nam,

If you are hosting on our servers, then database is "local" to the website files, so the connection is made "locally". Therefore, the connection setting is set to "localhost" by default. If you're trying to connect to a database outside of the hosting server, then you would have to setup a connection string using something like the mysqli_connect() function .

I hope that helps to answer your question. Please let us know if you need further assistance.

Arnel C.
n/a Points
2014-11-07 8:31 am

Hi sir i am Guna,

I am new to PHP. i know the Concepts of Core PHP. but i have no idea about PHP mailer. concepts so please help me for that like how to send a mail using PHP. i have the files(class.pop3.php, class.phpmailer.php & class.smtp.php) but i dont know how to use that and configure. so please help me.




28,219 Points
2014-11-07 12:14 pm
Hello Guna,

We do not have specific articles on those particular functions, however we do have an article on Reply
n/a Points
2015-04-17 11:51 pm


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