php / html code process

Can somebody help me, how can I process this in wordpress as php/html.
I put this as is, returning empty in ‘select’ section.
Thanks,

[ Moderator note: code fixed. Please wrap code in the backtick character or use the code button. ]

<?php
mysql_connect("localhost", "root", "password") or die("Connection Failed");
mysql_select_db("company")or die("Connection Failed");
$query = "SELECT * FROM COMPANIES order by COMPANYNAME";
$result = mysql_query($query);
?> 

<select name='company'>
<option value="">Select</option>

<?php while ($line = mysql_fetch_array($result, MYSQL_ASSOC)) { ?>
<option value="<?php echo $line['COMPANYNAME'];?>"> <?php echo $line['COMPANYNAME'];?> </option>   <?php } ?> 

</select>