php-cli-progress-bar.php

<?php
# Shamelessly stolen from https://stackoverflow.com/questions/1053060/file-put-contents-with-array
# Remember to start $done with 1 or more, or you'll get a division by zero. 🙀
function show_status($done, $total, $size = 30)
{
    static $start_time;
    
    // if we go over our bound, just ignore it
    if ($done > $total) {
        return;
    }
    
    if (empty($start_time)) {
        $start_time=time();
    }
    $now = time();
    
    $perc=(double)($done/$total);
    
    $bar=floor($perc*$size);
    
    $status_bar="\r[";
    $status_bar.=str_repeat("=", $bar);
    if ($bar<$size) {
        $status_bar.=">";
        $status_bar.=str_repeat(" ", $size-$bar);
    } else {
        $status_bar.="=";
    }
    
    $disp=number_format($perc*100, 0);
    
    $status_bar.="] $disp%  $done/$total";
    
    $rate = ($now-$start_time)/$done;
    $left = $total - $done;
    $eta = round($rate * $left, 2);
    
    $elapsed = $now - $start_time;
    
    $status_bar.= " remaining: ".number_format($eta)." sec.  elapsed: ".number_format($elapsed)." sec.";
    
    echo "$status_bar  ";
    
    flush();
    
    // when done, send a newline
    if ($done == $total) {
        echo "\n";
    }
}