Upload image file to MySQL as BLOB

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August 16th, 2007, 01:25 PM

eyeshield21

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Join Date: Aug 2007

Posts: 12

Time spent in forums: 11 h 15 m 23 sec
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Upload image file to MySQL as BLOB

hello,

i have this code below in which to upload image and store if in the database but it occurs an error upon running the program please help me im stack in here .. thankss

PHP Code:


		
			
<?

if (!isset($_REQUEST["submit"])) {



?>

<form method="POST" action="<?= $_SERVER["PHP_SELF"] ?>" enctype="application/x-www-form-

urlencoded">

<table>

<tr><td>Type</td><td><select name="imgtype"><option value="image/gif">GIF</option><option

value="image/jpeg">JPEG</option></select></td></tr>

<tr><td>File</td><td><input type="file" name="imgfile"></td></tr>

<tr><td></td><td><input type="submit" name="submit" value="upload"><input type="reset"></td></tr>

</table>

</form>



<?

//-- save image to db --

} else {

  /*

  the code below is a suggestion from California Strong...

  */

  $hndl=fopen($_REQUEST["imgfile"],"r");

  $isize=sizeof($_REQUEST["imgfile"]);



  $imgdata="";

  while(!feof($hndl)){

    $imgdata=fread($hndl,$isize);

  }; 



  /*

  my code was...

 

  $hndl=fopen($_REQUEST["imgfile"],"r");

  $imgdata=fread($hndl,filesize($_REQUEST["imgfile"]));

  */

  

   $imgdata=addslashes($imgdata); 



  $dbconn = @mysql_connect(localhost,simply22,msiatech8) or exit("SERVER Unavailable");

  @mysql_select_db(simply22_simplyok,$dbconn) or exit("DB Unavailable");





  $sql = "INSERT INTO tblimage VALUES(NULL,'". $_REQUEST["imgtype"] ."','". $imgdata ."')";

 

  @mysql_query($sql,$dbconn) or exit("QUERY FAILED!");



  mysql_close($dbconn);



  fclose($hndl);



  echo "<a href=\"test_imagedb_view.php\">view image</a>";



};

?>

errors:

Warning:fopen: failed to open stream: No such file or directory in
Warning: feof(): supplied argument is not a valid stream resource in on line 26

August 16th, 2007, 02:11 PM

cwf

Contributing User

Join Date: Apr 2007

Posts: 343

Time spent in forums: 1 Week 2 Days 18 h 8 m 34 sec
Reputation Power: 2

To upload a file through a form in a browser, the enctype must be -

Code:

enctype="multipart/form-data"

Once you do this, the file will be uploaded, and will be accessible through the $_FILES array.

Reading this link will probably help - http://www.php.net/manual/en/features.file-upload.php

August 16th, 2007, 08:45 PM

akong_mata

Registered User

Join Date: Jun 2007

Location: makati city

Posts: 15

Time spent in forums: 10 h 21 m 57 sec
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cwf is right eyeshield21 and i haven't tried storing an IMAGE exactly in a database.. an easy way for me is that i store only the FILENAME of the FILE/IMAGE into the database.. i'm not sure if you're comfortable using this type of style but that's how I did it..

but we all know that there are so many ways of managing a FILE..

More reference:
http://www.php.net/features.file-upload
http://www.tizag.com/phpT/fileupload.php
http://www.w3schools.com/php/php_file_upload.asp

August 16th, 2007, 09:31 PM

cwf

Contributing User

Join Date: Apr 2007

Posts: 343

Time spent in forums: 1 Week 2 Days 18 h 8 m 34 sec
Reputation Power: 2

Since the subject of storing images/files in a database has been brought up... my 2 cents -

A database is not a file storage engine. Using a database to store files is inefficient. It takes more processing CPU cycles, more memory, more time, and more storage space over just storing the files as a file.

Because binary data must be escaped before putting it into the database and un-escaped every time it is retrieved, the PHP program and the database engine use up additional resources over what is needed to just keep the file as a file in the file system.

I just did a quick test of the additional disk space need. It was about 2%-3% for the two test files I used -

Original .jpg file - 121,040 escaped size - 123,936 a 2.4% increase.
Original .jpg file - 57,902 escaped size - 59,577 a 2.9% increase.

If you have a lot of files or the file sizes are large, this extra storage space will add up.

August 17th, 2007, 02:09 PM

hammer65

Contributing User

Join Date: Aug 2007

Location: Nebraska

Posts: 55

Time spent in forums: 12 h 16 m 53 sec
Reputation Power: 1

The only reason to store file contents is if you absolutely need the security model that the database provides. If you were for instance storing image scans of patient x-ray examinations or other private medical information in pdf form, then it might be necessary to store them in the database, otherwise, it's just a performance and storage problem, that you aren't going to want to deal with.

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