<?php
    /**
     * Converts the size in bytes to a more readable size
     * @param integer $size
     * @param string $unit
     * @return string
     */
    static function strHumanFileSize( $size, $unit = "" ) {
	if ( (!$unit && $size >= 1 << 30) || $unit == "GB" )
	    return number_format( $size / (1 << 30), 2 ) . "GB";
	if ( (!$unit && $size >= 1 << 20) || $unit == "MB" )
	    return number_format( $size / (1 << 20), 2 ) . "MB";
	if ( (!$unit && $size >= 1 << 10) || $unit == "KB" )
	    return number_format( $size / (1 << 10), 2 ) . "KB";
	return number_format( $size ) . " bytes";

    }
?>