how to paginate on directory list

[domainer10]

<?php
$dir='../post';
$files1=scandir($dir);
$count=count($files1);
for($i=2;$i<$count;$i++){

$showface=str_replace("_"," ",$files1[$i]);
$reformat=strlen($showface);
if($reformat>45){
echo substr($showface,0,45).'...'.substr($showface,-6);
}
else
{
echo $showface;
}

//below this line,i want to paginate the listed directory
//but don't know.pls help!

}
?>

[domainer10]

i'm stuck around this corner and would want someone to add his knowledge to the chunk of codes above so that it would be so easy to paginate directory listing in php.urgent help is needed!