This is simpliest progress-bar for php scripts

prgrsbr.php

function prgrsbr($oneStep, $maxSteps){
    $percent = $oneStep / $maxSteps * 100;
    $width = $percent * 10; // CSS property. 1% = 10px / 100% = 1000px
    echo '<div style="width:1000px;height:40px;border:1px solid black;"><div style="width:'.$width.'px;height:40px;line-height:40px;background-color:green;text-align:center">'.$percent.'%</div></div>';
}
$iMax = 10000;
for ($i = 1; $i <= $iMax; $i++) {
    prgrsbr($i, $iMax);
}