Using Imagick in PHP to convert PDFs into pictures, _php tutorials

Using Imagick in PHP to convert PDFs into pictures,

PHP Manual, the description of Imagick, is really concise, each member function, click Open to see the following text:
Copy CodeThe code is as follows:
Warning
This function was currently not documented; Only it argument list is available.

Just solved the problem of PHP loading, the processing of the picture is quite convenient, the Internet casually find a paragraph:
Copy CodeThe code is as follows:
<?php
Header ("Content-type:image/jpeg");
/**
* Reduce image size.
*
* @param $image binary images to be processed
* Width of picture size after @param $width processing (px)
* Height of picture size after @param $height processing (px)
* @param $crop whether to crop the picture
*
* @return Binary images processed
*/
function Resize ($image, $width, $height, $crop)
{
$imagick = new Imagick ($image);
$w = $imagick->getimagewidth ();
$h = $imagick->getimageheight ();
if ($w > $width | | $h > $height)
{
if ($crop)
{
$imagick->cropthumbnailimage ($width, $height);
}
Else
{
$imagick->resizeimage ($width, $height, Imagick::filter_lanczos, 1, true);
}
}
$processed _image = $imagick->getimageblob ();
return $processed _image;
}
$s =resize ("123.jpg", 60, 40, 1);
Echo $s;
?>

But what I'm going to do with this extension is to convert the PDF to PNG. PDF Oh!
Copy CodeThe code is as follows:
<?php
/**
* Pdf2png
* @param $pdf pending PDF file
* @param $path The path of the picture to be saved
* @param $page the page to be exported-1 for all 0 for the first page 1 for the second page
* @return saved picture path and file name.
*/
function Pdf2png ($pdf, $path, $page =-1)
{
if (!extension_loaded (' Imagick '))
{
return false;
}
if (!file_exists ($pdf))
{
return false;
}
$im = new Imagick ();
$im->setresolution (120,120);
$im->setcompressionquality (100);
if ($page ==-1)
$im->readimage ($pdf);
Else
$im->readimage ($pdf. " [". $page."] ");
foreach ($im as $Key = $Var)
{
$Var->setimageformat (' png ');
$filename = $path. " /". MD5 ($Key. Time ()). PNG ';
if ($Var->writeimage ($filename) = = True)
{
$Return [] = $filename;
}
}
return $Return;
}
$path = "Images";//Make sure that the folder is in the current directory, because it is always used, so it is not detected
$s =pdf2png ("test.pdf", $path);
$scount =count ($s);
for ($i =0; $i < $scount; $i + +)
{
echo "Page". ($i + 1). "

";
}
?>

Is it the same as above? But always unsuccessful, readimage over there, check the error output:
Copy the Code code as follows:
PHP Fatal error:uncaught exception ' imagickexception ' with message ' postscriptdelegatefailed ' test.pdf ': No such file or Directory

Baidu Google for a long time, the last brainwave, not to say PostScript it? I'm looking, I'm faking.
This postscript, in fact, is Ghostscript.
After the installation, a run, OK!

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