How to use multiple database using php

[MuzicStar]

<?php
$dbh1 = mysql_connect($hostname, $username, $password);
$dbh2 = mysql_connect($hostname, $username, $password, true);
$hostname="localhost";
$username="star_zedge";
$password="";

mysql_select_db('star_mstar', $dbh1);
mysql_select_db('star_admin', $dbh2);  
$sql = mysql_query('select * from mobile', $dbh2); 
//$sql = mysql_query ("SELECT * FROM mobile ORDER BY id DESC limit 5",$dbh1);
$result = mysql_query($sql) or die(mysql_error());
while ($row = mysql_fetch_assoc($result)) {  

	echo"<br/>";
	echo"{$row['mname']}";
        echo"<br/>";
}
?>

i have try this code but this code also not working.

Added after 21 minutes:

<?php
$conn1 = mysql_connect("localhost","USERNAME","PASSWORD") or die(mysql_error());
$conn2 = mysql_connect("localhost","USERNAME","PASSWORD","true") or die(mysql_error());

mysql_select_db("DB NAME1",$conn1);
mysql_select_db("DB NAME2",$conn2);

$query = "SELECT * FROM mobile";
$result = mysql_query($query,$conn1);
while ($row = mysql_fetch_assoc($result)) {  

	echo"<hr/>SHOW FROM 1ST DATABASE<br/>";
	echo"{$row['mname']}";
        echo"<br/>";
}
$result2 = mysql_query($query,$conn2);
while ($row = mysql_fetch_assoc($result2)) {  

	echo"<hr/>SHOW FROM 2ND DATABASE<br/>";
	echo"{$row['mname']}";
        echo"<br/>";
}
?>

This code working fine
Thankx for helping me.

[just_m3.]

$dbh2 = mysql_connect($hostname, $username, $password, true);
found this on google copy and pasted only took 4 minutes.

yup "true" allows you to connect different database's in same script , without it .. connect cannot be done , because data's cannot be differentiate !

stackoverflow ...

[Loony]

You can make multiple calls to mysql_connect(), but if the parameters are the same you need to pass true for the '$new_link' (fourth) parameter, otherwise the same connection is reused.

so then you have

$dbh1 = mysql_connect($hostname, $username, $password); 
$dbh2 = mysql_connect($hostname, $username, $password, true); 

mysql_select_db('database1', $dbh1);
mysql_select_db('database2', $dbh2); 

Then to query database 1, do

mysql_query('select * from tablename', $dbh1); 

and for database 2

mysql_query('select * from tablename', $dbh2); 

found this on google copy and pasted only took 4 minutes.

[MuzicStar]

plzz php/mysql master help me!!!

<?php 
    $conn = mysql_connect ("localhost", "root", ""); 
    $db1  = mysql_select_db ("database1", $conn); 
    $db2  = mysql_select_db ("database2", $conn); 

    $result = mysql_query ("SELECT * FROM whatever", $db1); 
?>

but i got this error msg: Access denied for user 'star'@'localhost' (using password: NO)
plz correct this coding.
thankx in advance