PHP获取photoshop写入图片文字信息的方法

$image_info = array();
$size = getimagesize('图片文件.jpg', $info);
if(isset($info['APP13']))
{
  $iptc = iptcparse($info['APP13']);
  foreach (array_keys($iptc) as $s)
  {      
    $c = count ($iptc[$s]);
    for ($i=0; $i <$c; $i++)
    {
      @$image_info[$s] .= $iptc[$s][$i];
    } 
  }
}
print_r($image_info);