php connection to sql server

Here i put the code php to sql server.this is connection string between php and sqlserver.

<?php
$myServer = "localhost";
$myUser = "your_name";
$myPass = "your_password";
$myDB = "examples"; 

//connection to the database
$dbha = mssql_connect($myServer, $myUser, $myPass)
or die("Couldn't connect to SQL Server on $myServer"); 

//select a database to work with
$selected = mssql_select_db($myDB, $dbh)
or die("Couldn't open database $myDB"); 

//declare the SQL statement that will query the database
$query = "SELECT id, address, city ";
$query .= "FROM city ";
$query .= "WHERE id='001'"; 

//execute the SQL query and return records
$result = mssql_query($query);

$numRows = mssql_num_rows($result); 
echo "<h2>" . $numRows . " Row" . ($numRows == 1 ? "" : "s") . " Returned </h1>"; 

//display the results 
while($row = mssql_fetch_array($result))
{
echo "<li>" . $row["id"] . $row["address"] . $row["city"] . "</li>";
}
//close the connection
mssql_close($dbhandle);
?>