如何使用PHP将上传的pdf的第一页显示为缩略图？

I am working on an e-learning portal, but I am finding it difficult to display the first page of the uploaded pdf as a thumbnail.

Any hints, assistance or suggestion will be appreciated

ImageMagick is very good at exporting and scaling PDF to PNG/JPG/GIF. Most hosters support it, this is the fastest and simplest way.

You need to make use of ImageMagick

Example:

<?php
$imagePreview = new imagick('file.pdf[0]');
$imagePreview->setImageFormat( "jpg" );
header( "Content-Type: image/jpeg" );
echo $imagePreview;