/**
 * Ascii progress bar function - draws a progress bar
 * 
 * @param $now number containing what item is beeing processed e.g.: 42
 * @param $total number containing the total amount of items e.g.: 101
 * @param $text what to put in front of the bar
 * [@param $width how many chars the bar is in total, keep it under 80]
 *
 * @returns void
 * @author Mads Jørgensen (php <at> mads <dot> sulau <dot> dk)
 */
function print_progress($now=null, $total=null, $text="Progress", $width=30) {
	// where ware we
	static $drawn = false;
	static $last_precent = 0;
	
	// where are we
	$precent = ceil($now/$total*100);
	
	// check for reset
	if ($now == null && $total == null || $last_precent > $precent) {
		$last_precent = 0;
		$drawn = false;
		
		return;
	}
	
	if ($precent > 100) {
		$precent = 100;
	}
	if ($now > $total) {
		$now = $total;
	}
	
	// how much space do we really have
	$real_width = $width-strlen($text)-2;
	
	// precent width
	$precent_width = $real_width/100;
	
	// draw the bar
	if (!$drawn) {
		print $text .": ";
		print "|";
		print str_repeat(".", $real_width+3);
		print "|";
		
		$drawn = true;
	}
	
	// the fun part
	if ($last_precent != $precent) {
		print str_repeat(chr(8), $real_width+4);
		print str_repeat("-", floor($precent_width*$precent));
		if ($precent != 100) {
			print str_repeat(".", $real_width-floor($precent_width*$precent)-1);
		}
		print "| ";
		print str_pad($precent, 2, " ");
		print "%";
	}
	
	// check for done
	$last_precent = $precent;
}

for ($i=0; $i<20; $i++) {
	print_progress($i, 19, "Progress");
	usleep(50 * 1000);
}
print "\n";
print "foo\n";

for ($i=0; $i<10; $i++) {
	print_progress($i, 10, "Progress");
	usleep(50 * 1000);
}

print "\n";