How to insert images into the database and fetch it from the database and display using PHP?

Question

How do I insert images into the database, and fetch it from the database and display using PHP?

I have tried many times as i am a beginner of php please help me out.

Answer 1

You can use a BLOB field for storing binary data, but please be aware that the performance may be moderate. It's almost always better to store the image as a file on disk and just store the file name in the database. To fetch the image from db, you will need to read the whole image into memory, which is a waste of resources. It's better to offload the image handling to the web server which can stream the image to the client.

Answer 2

As much as this is not a recommended practice, if you have your heart set on doing this, there are a pile of tutorials online which will walk you through how to do this:

• Uploading Files To MySQL Database
• Upload a File and write to MySQL
• Upload Files to MySQL using PHP Tutorial
• Uploading files into a MySQL database using PHP

Answer 3

You can create a table like so:

CREATE TABLE `image` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `filename` varchar(128) COLLATE utf8_unicode_ci NOT NULL,
    `mime_string` varchar(128) COLLATE utf8_unicode_ci NOT NULL,
    `data` longblob NOT NULL,
    `data_size` int(11) NOT NULL,
    `hash` varchar(64) COLLATE utf8_unicode_ci NOT NULL,
    `compressed` tinyint(4) NOT NULL,
    `remote_id` int(11) DEFAULT NULL,
    `created_at` datetime DEFAULT NULL,
    `updated_at` datetime DEFAULT NULL,
    PRIMARY KEY (`id`),
    KEY `image_I_1` (`hash`),
    KEY `image_I_2` (`remote_id`)
) ENGINE=InnoDB AUTO_INCREMENT=125 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci ROW_FORMAT=COMPACT

When you write the file back to the output, you'll have to write the HTTP header content type to the same as the mime type:

header( 'Content-type', 'image/png' );

Which is why you store the mime type along with it.