what is the best way the save fpdf into database?

问题:

I'm new in PHP and i want to saving pdf into database I would like to know what the best way to save fpdf into database? I'm using BLOB type just to save the content of pdf but i want to get the file pdf to read into table and see the content when i clicked to the file.

My code to get the content is:

$query = "select nomeUser,email,nomeVoucher,categoria,preco,confirmacao,filePDF
from historico
LIMIT $start, $per_page";
while ($stmt->fetch()) {

        if($confirmacao == "a confirmar"){
        echo("<tbody >");           
        echo("<tr><td>$nomeUser</td>");
        echo "<td>$email</td>";
        echo("<td >$nomeVoucher</td>");
        echo("<td >$categoria</td>");
        echo("<td>$preco €</td>");
        echo("<td>$confirmacao</td>");

filePDF is the name where i save the content of my fpdf How can i do this?