tma/include/random.inc.php

<?php

// plante la graine...
@mt_srand((float) microtime() * 1000000);

function RandomColors()
{
    $colors = array("ccccff","cceecc","ffcccc","eeccee","ffccff","cceeee","cceeff");
    $color[0] = $color[1] = "000000";

    while ($color[0] == $color[1]) {
        $color[0] = $colors[mt_rand(0, count($colors) - 1)];
        $color[1] = $colors[mt_rand(0, count($colors) - 1)];
    }

    @array_splice($colors, 0);

    return $color;
}

function RandomFile($dirname)
{
    $i = 0;
    $d = opendir($dirname);

    while (false !== ($rfile = readdir($d))) {
        if (($rfile[0] != ".") && is_file($dirname."/".$rfile)) {
            $listfiles[++$i] = $rfile;
        }
    }
    closedir($d);

    if (count($listfiles) > 1) {
        $rfile = $listfiles[mt_rand(1, count($listfiles))];
    } else {
        $rfile = $listfiles[1];
    }

    @array_splice($listfiles, 0);

    return $rfile;
}