php-cli progress bar

prbar.php

<?php

function progressBar($cur = 0, $max = 0, $full = '#', $empty = ' ')
{
    $p = (int)($cur / $max * 100);

    return $max < 100 || $cur % (int)($max / 100) == 0 || $p == 100 ?
        sprintf("\r[%s%s] %d%% %d/%d", str_repeat($full, $p), str_repeat($empty, 100 - $p), $p, $cur, $max) : '';
}

// demo
$max = 54321;
foreach (range(0, $max) as $i) {
    echo progressBar($i, $max);
    usleep(rand(10, 200));
}