如何顯示從mysqli數據庫到HTML PHP表的Blob PDF數據

Question

我這里有一個免費的錯誤代碼，說明如何通過php將數據庫中的所有數據顯示到html表中，但是我不僅希望顯示字符和數字，還希望顯示BLOB數據，例如Pdf，Image，Txt等，你們能幫我嗎，btw是php和mysqli的新手，$ row [10]是我設置為BLOB數據類型的字段，在此先感謝大家，我愛你們！！

<?php

$servername = "localhost";
$username = "root";
$password = "";
$dbname = "recordmain_db" ;

$conn = mysqli_connect($servername, $username, $password, $dbname); 

// Check connection

if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }

$result = mysqli_query($conn,"SELECT * FROM recordmain_table");


  echo "<center><table id=myTable table border=8 cellspacing=1     
  cellpadding=5>";

  echo "<tr class='header'>

       <th>Doc Type</th>
       <th>Doc Date</th>
       <th>Date Sent</th>
       <th>Medium of Transaction</th>
       <th>Description</th>
       <th>Receiver</th>
       <th>Address</th>
       <th>Contact</th>
       <th>Attachment</th>
       <th>File</th>

       </tr>";
  ?>



  <?php


    while($row = mysqli_fetch_array($result))

   {

 echo 

 "<tr>


      <td>" . $row[1] . "</td>    

      <td> " . $row[2] . "</td>

      <td>" . $row[3] . "</td>

      <td>" . $row[4] . "</td>

      <td>" . $row[5] . "</td>

      <td>" . $row[6] . "</td>

      <td>" . $row[7] . "</td>

      <td>" . $row[8] . "</td>

      <td>" . $row[9] .  "</td>

      <td>" . $row[10] .  "</td>


      </tr>";


      }

 echo "</table></center>";

mysqli_close($conn);
?>

Answer 1

您可以使用base64_encode()將blob數據顯示為pdf：

"<object data=\"data:application/pdf;base64," . base64_encode($row[10]) . " type=\"application/pdf\" ></object>"