PHP uses Imagick to generate PNG thumbnails from PDF

Php_imagick what?

A php extension that allows PHP to invoke ImageMagick functionality. Using this extension enables PHP to have the same functionality as ImageMagick.
ImageMagick is a powerful, stable, and free toolset and development kit that can be used to read, write, and process picture files in more than 185 basic formats, including popular TIFF, JPEG, GIF, PNG, PDF, and PHOTOCD formats. With ImageMagick, you can dynamically generate pictures based on the needs of your Web application, and you can resize, rotate, sharpen, subtractive, or add special effects to one (or a group) of pictures and save the results of the operation in the same format or in other formats.

Php_imagick How to use

. Create a thumbnail and display it

The code is as follows	Copy Code
<?php Header (' Content-type:image/jpeg '); $image = new Imagick (' image.jpg '); If 0 is provided as a width or height parameter,//aspect ratio is maintained $image->thumbnailimage (100, 0); Echo $image; ?>

Thumbnail gif animation picture

The code is as follows	Copy Code
<?php /* Create A new Imagick object and read in GIF */ $im = new Imagick ("Example.gif"); * Resize All frames * * foreach ($im as $frame) { /* 50x50 Frames * * $frame->thumbnailimage (50, 50); /* Set the virtual canvas to correct size * * $frame->setimagepage (50, 50, 0, 0); }/* Notice writeimages instead of writeimage * * $im->writeimages ("Example_small.gif", true); ?>

All right, let's get to the point.

PDF Build PNG home Thumbnail (server needs support Imagick)

The code is as follows

Copy Code

/** * Pdf2png * @param $pdf PDF files to be processed * @param $path picture path to save * @param $page the page to be exported-1 is all 0 is the first page 1 is the second page * @return saved picture path and filename */ function Pdf2png ($pdf, $path, $page =0) { if (!is_dir ($path)) { mkdir ($path, true); } if (!extension_loaded (' Imagick ')) { Echo ' didn't find imagick!. ' ; return false; } if (!file_exists ($pdf)) { Echo ' did not find pdf '; return false; } $im = new Imagick (); $im->setresolution (120,120); Set Image resolution $im->setcompressionquality (80); Compression ratio $im->readimage ($pdf.) [". $page."]); Set the first page to read a PDF $im->thumbnailimage (+, true); Change the size of an image $im->scaleimage (200,100,true); Shrink Zoom Small Image $filename = $path. " /". Time (). '. PNG '; if ($im->writeimage ($filename) = = True) { $Return = $filename; } return $Return; } $s =pdf2png (' file/1371273225-ceshi_ppt.pdf ', ' images '); echo "<div align=center></div> ";