PDF Manager: upload via FTP, save path to a database, list the uploaded files and read the PDF files in a search

I need to organize my library of PDF documents and I thought of sth like the following:

1) First I upload the PDF file using a web form to a remote folder of my choice in my server, saving the path to the file into a database. Check! This is easy!

2) Search and list files using a search bar on my web page. The problem resides here!

The doubt is can I search the content of a PDF file, inside the document, using key words, without the need of describing it in the upload stage?

I thought of using the saved path in the database to list the files in their folders and read the inside of the documents using programming,, so I can find thee file I am looking for easily. Is that possible? If yes, which is the best programming language for web applications to do so?