How to Store and Retrieve Images in a MySQL Database Using PHP?

Storing and Retrieving Images in MySQL Database Using PHP

Storing and retrieving images in a MySQL database is a common task when developing web applications that handle images. This article demonstrates how to achieve this using PHP.

Creating a Database Table

First, create a table in your MySQL database to store the images. You can use the following SQL statement to create a table named testblob:

CREATE TABLE testblob (
    image_id TINYINT(3) NOT NULL DEFAULT '0',
    image_type VARCHAR(25) NOT NULL DEFAULT '',
    image BLOB NOT NULL,
    image_size VARCHAR(25) NOT NULL DEFAULT '',
    image_ctgy VARCHAR(25) NOT NULL DEFAULT '',
    image_name VARCHAR(50) NOT NULL DEFAULT ''
);

Inserting an Image into the Database

To insert an image into the database, read the image data from a file and save it as a variable. You can then use the following PHP code:

$imgData = file_get_contents($filename);
$size = getimagesize($filename);
// Connect to MySQL database
... (connection code) ...

$sql = sprintf("INSERT INTO testblob
    (image_type, image, image_size, image_name)
    VALUES
    ('%s', '%s', '%d', '%s')",
    mysql_real_escape_string($size['mime']),
    mysql_real_escape_string($imgData),
    $size[3],
    mysql_real_escape_string($_FILES['userfile']['name'])
);

mysql_query($sql);

Retrieving an Image from the Database

To retrieve an image from the database and display it on a web page, use the following PHP code:

// Connect to MySQL database
... (connection code) ...

$sql = "SELECT image FROM testblob WHERE image_id=0";
$result = mysql_query("$sql");
header("Content-type: image/jpeg");
echo mysql_result($result, 0);
mysql_close($link);

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