Getting URL for Image stored in MySQL as a blob - php

Question

My wife's family is big into jigsaw puzzles and I am using PHP and MySQL to build them a site so they can see what puzzles they already own. This should prevent issues of buying the same puzzle twice.
When someone adds a puzzle, I will get them to upload an image of the box art that will then be stored as a blob in the database. I have all the puzzles in the database appearing in a styled table and I am happy with how it looks, but there is one more piece of functionality that I would like to have.
The table displays the uploaded blob/image, and I use CSS to reduce it to thumbnail size - a future revision will show a true thumbnail to save data but that comes later, for now a CSS reduced blob/image is fine.
What I want to do is also have the thumbnail image be a link that can be clicked to open the image full size, but I don't know how to grab a URL from a blob stored in MySQL and hoping someone can help. What I currently have is below. Thanks in advance for your help!
$conn = new mysqli($configs->host, $configs->username, $configs->password, $configs->database);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT puzzles.name, puzzles.photo, manufacturers.name as manufacturer, owners.name as owner FROM puzzles LEFT JOIN manufacturers ON puzzles.manufacturer = manufacturers.id LEFT JOIN owners ON puzzles.owner = owners.id ORDER BY puzzles.id";
$result = $conn->query($sql);
?>
<?php
echo '<table id="puzzleTable">
<tr>
<th>Puzzle Name</th>
<th>Manufacturer</th>
<th>Owner</th>
<th>Puzzle Photo</th>
<th>Options</th>
</tr>';
while ($row = $result->fetch_assoc())
{
echo "<tr>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['manufacturer'] . "</td>";
echo "<td>" . $row['owner'] . "</td>";
echo "<td><a href='NEED BLOB IMAGE URL HERE'><img src='data:image/jpeg;base64,".base64_encode($row['photo'])."'/></a></td>";
echo "<td><a href='#'>Edit</a> | <a href='#'>Delete</a></td>";
}
echo "</tr></table>";

Answer 1

You should create a link to a php page. A parameter for the ID of the record related to the database should be sent to it. In the php page, set the header like this: header("Content-type: imageType).
mysql blob using php

Answer 2

for build your app that return your URL and you can show this image, you should to do a insert in your db with your local storage folder or internet URL. In new column. Blob return only object image, but I recommend you that not use blob, think that if your app it grows, you db will be very weight and will delay in return data.
you can to do:
query for url internet
$sql = "INSERT INTO puzzles(column, column, column, url)
VALUES ('xxx', 'xxx', 'xxx', 'https://urlInternet')";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
query for url local
$sql = "INSERT INTO puzzles(column, column, column, url)
VALUES ('xxx', 'xxx', 'xxx', '/images/'.$_POST["img"])";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
When you return your data:
while ($row = $result->fetch_assoc())
{
echo "<tr>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['manufacturer'] . "</td>";
echo "<td>" . $row['owner'] . "</td>";
echo "<td><a href='".$row['URL']"'><img src='data:image/jpeg;base64,".base64_encode($row['photo'])."'/></a></td>";
echo "<td><a href='#'>Edit</a> | <a href='#'>Delete</a></td>";
}