want to create a url like http://www.example.com/uername

want to create a url like http://www.example.com/uername - Printable Version

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want to create a url like http://www.example.com/uername - El Forum - 06-21-2012

[eluser]CodeIgniteMe[/eluser]
You also need a controller "user" where the function "profile" belongs

Code:
// User class

class User extends CI_Controller{

// profile function

function profile($id){

// display id value

echo $id;

}

}

want to create a url like http://www.example.com/uername - El Forum - 06-29-2012

[eluser]Rayhan[/eluser]
Here what I have done to my ruote.php

$con = mysql_connect("localhost","username","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}

mysql_select_db("dbname", $con);

$result = mysql_query("SELECT * FROM table_name");

while($row = mysql_fetch_array($result))
{
$sname = $row['user_name'];
$a = $sname;
$b = "user/name/".$row['aid'];
$route[$a] = $b;
}

want to create a url like http://www.example.com/uername - El Forum - 06-29-2012

[eluser]weblyan[/eluser]
routes.php is a settings file and should not contain any code other than assigning variabels.
Besides, if you write code like that then you are not using the framework correctly.
http://ellislab.com/codeigniter/user-guide/database/results.html

Anyway, for the routing, I haven't really tried it but there is a way to set a default controller in the index.php

Code:
/*

 * --------------------------------------------------------------------

 * DEFAULT CONTROLLER

 * --------------------------------------------------------------------

 *

Then you can probably use $this->uri->segment(1); the get the username.