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

Storing and Retrieving Images in MySQL Database Using PHP

How can you preserve and access images within a MySQL database using PHP? For beginners, understanding this can be daunting. Here's a comprehensive guide to get you started:

Step 1: MySQL Database Preparation

Create a MySQL table for storing images, similar to this example:

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 ''
);

Step 2: Storing Image in Database

To write an image to the database:

$imgData = file_get_contents($filename);
$size = getimagesize($filename);
mysql_connect("localhost", "$username", "$password");
mysql_select_db ("$dbname");
$sql = sprintf("INSERT INTO testblob
    (image_type, image, image_size, image_name)
    VALUES
    ('%s', '%s', '%d', '%s')",
    mysql_real_escape_string($size['mime']),
    mysql_real_escape_string($imgData),
    $size[3],
    mysql_real_escape_string($_FILES['userfile']['name'])
    );
mysql_query($sql);

Step 3: Retrieving Image from Database

To display an image from the database:

$link = mysql_connect("localhost", "username", "password");
mysql_select_db("testblob");
$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);

The above is the detailed content of How Can I Store and Retrieve Images in a MySQL Database Using PHP?. For more information, please follow other related articles on the PHP Chinese website!