I need some idea how to random pic+txt...

[metulj]

let's say i got pics marked from 1 to 50
and i also hav txt files marked from 1 to 50

how would i display randomly on each refresh
pic+txt matching the number of both files ?
(i know how to display random things...
but how to match number of both files?)

like.. if is random pic 1.jpg then at same time i need to display 1.txt...
this might be easy to code but right now im really without idea lol

btw... i dont need this for lava
just general code or at least tip

[something else]

<?php
$rand = rand(1,50);
?>
<img src="images/<?=$rand?>.png" alt=""/><br/>
<?
$tx = fopen("txts/$rand.txt", 'r');
$dat = fread($tx,  filesize("txts/$rand.txt"));
fclose($tx);
echo $dat;
?>