Before you can access data in a database, you must create a connection to the database. In PHP, this is done with the mysql_connect() func...
Before you can access data in a database, you must create a connection to
the database.
In PHP, this is done with the mysql_connect() function.
Syntax
mysql_connect(servername,username,password);
|
| Parameter |
Description |
| servername |
Optional. Specifies the server to connect to. Default value is "localhost:3306" |
| username |
Optional. Specifies the username to log in with.
Default value is the name of the user that owns the server process |
| password |
Optional. Specifies the password to log in with.
Default is "" |
Example
In the following example we store the connection in a variable ($con) for later use in the
script. The "die" part will be executed if the connection fails:
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// some code
?>
|
Closing a Connection
The connection will be closed automatically when the script ends. To close the
connection before, use the mysql_close() function:
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
// some code
mysql_close($con);
?>
|
