Progress Display for PHP CLI scripts

gistfile1.php

for ($i=1; $i<101; $i++) {
  progress($i, 100, 'Percent Complete: ');
  usleep(25000);
}

function progress ($step_x, $of_y, $label = '') {
  $p = number_format($step_x / $of_y * 100, 1) . '%';
  $p = str_pad($p, 5, ' ', STR_PAD_LEFT);
  if ($label)
    $p = "{$label} {$p}";
  echo str_repeat("\010", strlen($p));
  if ($step_x < $of_y)
    echo $p;
  else
    echo str_repeat(' ', strlen($p)) . PHP_EOL;
}