PHP Decode

<?php 
 require base64_decode('Y29uZmlnLnBocA==');$con =@mysql_connect($db_host,$db_username,$db_password)or die(mysql_error());mysql_query(base64_decode('c2V0IG5hbWVzIFVURjg='));mysql_select_db($gmdb, $con);$perNumber=10;$page=$_GET['page'];$count=mysql_query("select count(*) from user");$rs=mysql_fetch_array($count);$totalNumber=$rs[0];$totalPage=ceil($totalNumber/$perNumber);if (!isset($page)){$page=1;}$startCount=($page-1)*$perNumber;$result=mysql_query("select * from user  limit $startCount,$perNumber" );while ($row=mysql_fetch_array($result)){echo "<tr><td>$row[1]</td><td>$row[3]</td><td>$row[4]</td><td>$row[5]</td><td>$row[6]</td><td>$row[7]</td><td><a href='gmedit.php?id=$row[0]'></a></td></tr>";}if ($page != 1){?> 
		<tr><a href="gmlist.php?page=<?php echo $page - 1;?>"></a></tr> 
		<?php 
 }for ($i=1;$i<=$totalPage;$i++){?> 
		<tr><a href="gmlist.php?page=<?php echo $i;?>"><?php echo base64_decode('IOesrA==').' '.$i.' '.'  ';?></a></tr> 
		<?php 
 }if ($page<$totalPage){?> 
		<tr><a href="gmlist.php?page=<?php echo $page + 1;?>"></a></tr> 
		<?php 
 }?>