how can I print certain item(s) of an array

Hello,
I am trying to read the directory, where there are pages, into an array and print the files as links. But I do not want all the files to be printed. I use this code

function directory($result)
{
$handle=opendir("$result");

$count = 0;

# Gather the files, and put them in a array
while( $file = readdir( $handle) )
{
$file_array[] = $file;
}
foreach( $file_array as $file )
{
if( $file == ".." || $file == "." )
{
continue;
}
if( !eregi( ".htm$", $file ) )
{


continue;
}
$file=eregi_replace(".htm$","",$file);
# Display the file with a link
echo"$file";

}
echo"</blockquote>";
#close thedirectory you used
closedir($handle);



return $result;

}
$son=directory(ingilizcedersleri);
echo "$son";

This function print all files but I want print, let's say, only first and fourth element of the array.

Thanks in advance
Mk
echo $son[0]
echo $son[3]

echo $array[0];
echo $array[3];

that should print out the 1st and 4th element