How can I store and retrieve images from a MySQL database using PHP

Question

How can I insert an image in MySQL and then retrieve it using PHP   I have limited experience in either area  and I could use a little code to get me started in figuring this out

User · Answer

Instead of storing images in database store them in a folder in your disk and store their location in your data base

User · Answer

Beware that serving images from DB is usually much  much much slower than serving them from disk    You ll be starting a PHP process  opening a DB connection  having the DB read image data from the same disk and RAM for cache as filesystem would  transferring it over few sockets and buffers and then pushing out via PHP  which by default makes it non-cacheable and adds overhead of chunked HTTP encoding   OTOH modern web servers can serve images with just few optimized kernel calls  memory-mapped file and that memory area passed to TCP stack   so that they don t even copy memory around and there s almost no overhead   That s a difference between being able to serve 20 or 2000 images in parallel on one machine   So don t do it unless you absolutely need transactional integrity  and actually even that can be done with just image metadata in DB and filesystem cleanup routines  and know how to improve PHP s handling of HTTP to be suitable for images

User · Answer

Personally i wouldnt store the image in the database  Instead put it in a folder not accessable from outside  and use the database for keeping track of its location  keeps database size down and you can just include it by using PHP  There would be no way without PHP to access that image then

User · Answer

First you create a MySQL table to store images  like for 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         Then you can write an image to the database like           All of the below MySQL  commands can be easily    translated to MySQLi  with the additions as commented         imgData   file get contents  filename    size   getimagesize  filename   mysql connect  localhost     username     password    mysql select db    dbname       mysqli      link   mysqli connect  localhost    username   password  dbname     sql   sprintf  INSERT INTO testblob      image type  image  image size  image name      VALUES        s     s     d     s                     For all mysqli  functions below  the syntax is         mysqli whartever  link   functionContents                  mysql real escape string  size  mime         mysql real escape string  imgData        size 3       mysql real escape string   FILES  userfile    name           mysql query  sql     You can display an image from the database in a web page with    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

User · Answer

i also recommend thinking this thru and then choosing to store images in your file system rather than the DB     see here  Storing Images in DB - Yea or Nay

User · Answer

My opinion is  Instead of storing images directly to the database  It is recommended to store the image location in the database  As we compare both options  Storing images in the database is safe for security purpose  Disadvantage are    If database is corrupted  no way to retrieve    Retrieving image files from db is slow when compare to other option    On the other hand  storing image file location in db will have following advantages    It is easy to retrieve  If more than one images are stored  we can easily retrieve image information

[php] How can I store and retrieve images from a MySQL database using PHP?

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