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How to Store and Retrieve Images in a MySQL Database Using PHP?
How to Store and Retrieve Images in a MySQL Database Using PHP?
Dec 11, 2024 am 06:31 AM
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);The above is the detailed content of How to Store and Retrieve Images in a MySQL Database Using PHP?. For more information, please follow other related articles on the PHP Chinese website!
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