<?php
/**
 * @author www.iklfy.com
 * @copyright 2011
 * @filename thumb.class.php
 */
$arrFile = array('p1.jpg', 'p2.gif', 'p4.txt', 'p3.png');
/**
 * 得到等比例缩放的长宽
 */
function getNewSize($maxWidth, $maxHeight, $srcWidth, $srcHeight)
{
  if ($srcWidth < $srcHeight)
  {
    $maxWidth = ($maxHeight / $srcHeight) * $srcWidth;
  }
  else
  {
    $maxHeight = ($maxWidth / $srcWidth) * $srcHeight;
  }
  return array('width' => $maxWidth, 'height' => $maxHeight);
}