Converting a PDF file into an image using imagick in PHP

This article describes how to convert a PDF file into an image using imagick in PHP. This article focuses on the handling of two errors, especially GhostScript errors. For more information, see PHP Manual, the description of imagick is really concise. for each member function, click open to see the following text:

The code is as follows:

Warning
This function is currently not supported ented; only its argument list is available.

After the PHP loading problem was solved just now, it was quite convenient to process images. you can find the following link on the Internet:

The code is as follows:

<? Php
Header ("Content-type: image/jpeg ");
/**
* Reduce the image size.
*
* @ Param $ image: binary image to be processed
* @ Param $ width the width (px) of the image size after processing)
* @ Param $ height the height of the image size after processing (px)
* @ Param $ crop whether to crop the image
*
* @ Return: the processed binary image
*/
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 want to do with this extension is convert the PDF to PNG. PDF!

The code is as follows:

<? Php
/**
* Optional 2png
* @ Param $ pdf file to be processed
* @ Param $ path: path of the image to be saved
* @ Param $ page the page to be exported-1 is all 0 is the first page 1 is the second page
* @ Return specifies the path and file name of the saved image.
*/
Function compute 2png ($ 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(1_key.time(1_0000.'.png ';
If ($ Var-> writeImage ($ filename) = true)
{
$ Return [] = $ filename;
}
}
Return $ Return;
}
$ Path = "images"; // make sure this folder is in the current directory. This folder is not checked because it is always used.
$ S = 1272png ("testbench", $ path );
$ Scount = count ($ s );
For ($ I = 0; $ I <$ scount; $ I ++)
{
Echo"

Page ". ($ I + 1 )."

";
}
?>

Is it similar to above? But it is always unsuccessful. if there is an exception in readImage, view the error output:

The code is as follows:

PHP Fatal error: Uncaught exception 'imagickexception' with message 'postscriptdelegatefailed 'tested': No such file or directory'

Baidu and Google have been around for a long time. what's the last thought? isn't it Postscript? I am looking for it.
This Postscript is actually a GhostScript.
After installation, run it. OK!