PHP中怎么使用Imagick操作PSD文件

http://www.php.net/manual/zh/book.imagick.php

$im = new Imagick("test.psd");

$num_layers = $im->getNumberImages();

for ($i = 0, $num_layers = $im->getNumberImages(); $i < $num_layers; ++$i) {
$im->setImageIndex($i); //this
$im->setIteratorIndex($i); //or this is kinda redundant
$pagedata=$im->getImagePage();
//print("x,y: " + $pagedata["x"].", ".$pagedata["y"]."
\n");
//print("w,h: " + $pagedata["width"].", ".$pagedata["height"]."
\n");
foreach($im->getImageProperties("*") as $k => $v) print("$k: $v
\n");
//export layer
//$im->writeImage('layer_' . $i . '.png'); //导出所有图层到单独的png文件
}