How to Display Images Stored in a MySQL Database Using PHP and HTML?-Mysql Tutorial-php.cn

How to Display Images Stored in a MySQL Database Using PHP and HTML?

Patricia Arquette

Release： 2024-12-12 20:39:09

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How to Display Images Stored in a MySQL Database Using PHP and HTML?

Displaying Images from MySQL Database in HTML

In this scenario, the goal is to retrieve images from a MySQL database using PHP and display them in an HTML document's tag. Let's delve into the provided code and explore how to address the issue encountered.

The PHP script in the provided code successfully establishes a connection to the database and runs a SELECT query. However, it's important to note that the returned result from mysql_query() is not the actual image data itself. Instead, it's a resource that represents the result set of the query.

To display the image in the tag, you'll need to perform an additional step of retrieving the actual image data from the database. This can be achieved by creating a separate PHP script that accepts a unique identifier (e.g., id) as a parameter, executes a SELECT query to retrieve the image data, and returns the data in binary format.

For example, you could create a script named getImage.php as follows:

<?php
$link = mysqli_connect("localhost", "root", "", "dvddb");
$sql = "SELECT dvdimage FROM dvd WHERE id = ? ";
$result = mysqli_execute_query($link, $sql, [$_GET['id']]);
$image = mysqli_fetch_column($result);

header("Content-type: image/jpeg");
echo $image;
?>

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Then, in your catalog.php script, modify the tag to use the getImage.php script as the source of the image data:

<body>
<img src="getImage.php?id=1" width="175" height="200" />
</body>

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By doing this, when the tag is rendered, it will send a request to getImage.php with the id of the image you want to display. The getImage.php script will retrieve the image data from the database and output it in binary format, which will be displayed by the tag.

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