Re: [PHP] resize image and store it to DB
On Tue, May 1, 2007 5:54 am, Alain Roger wrote: else // both $width and $height are smaller than max, so we need to zoom Zooming an image is RARELY satisfactory in appearance... I'd say just leave it alone, personally. $escaped = pg_escape_bytea($thumb); // does not work and it's normal $thumb is an image, so ho can i make it useful for pg_escape_bytea function ? $thumb isn't the actual JPEG image. It's just a PHP resource number, pointing to the image. So, essentially, you are cramming the number 3 (or 2 or 4 or whatever) into PostgreSQL. You would need to do something not unlike: ob_start(); imagejpeg($thumb); $image = ob_get_contents(); ob_end_clean(); $escaped = pg_escape_bytea($image); //Insert obligatory don't store images in DB flame-war here :-) -- Some people have a gift link here. Know what I want? I want you to buy a CD from some indie artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] resize image and store it to DB
Hi,
I allow web application users to insert their own picture into database.
but i defined a max size limit 130 px width by 160px height.
so for that i determine the max ratio in case of picture does not have this
size.
after that i resize it and would like to store it to DB, however i have some
problem once it is resized.
here is my code :
data = file_get_contents($_FILES['uploadedfile']['tmp_name']);
$img = imagecreatefromstring($data);
$width = imagesx($img);
$height = imagesy($img);
$maxwidth = 130; //130px
$maxheight = 160; //160px
$ratio =0.00;
if($width $maxwidth || $height$maxheight)// image is somehow
bigger than 160px * 130px
{
if($width $maxwidth)
{
$ratio = $maxwidth/$width;
}
if($height$maxheight)
{
// always take the smallest ratio
$ratio = ($maxheight/$height) $ratio ? $ratio : ($maxheight/$height);
}
}
else // both $width and $height are smaller than max, so we need to zoom
{
$i=0.00;
$i=($maxwidth/$width);
$i = ($maxheight/$height) $i ? $i : ($maxheight/$height);
$ratio = $i;
}
$newwidth = $width*$ratio;
$newheight = $height*$ratio;
$thumb = imagecreatetruecolor($newwidth, $newheight);
imagecopyresized($thumb, $img, 0, 0, 0, 0, $newwidth, $newheight, $width,
$height);
$escaped = pg_escape_bytea($thumb); // does not work and it's normal
$thumb is an image, so ho can i make it useful for pg_escape_bytea function
?
i do not want to create a tmp file on server and after load it.
I would like to do it stored image directly into DB on-fly.
thanks alot,
--
Alain
Windows XP SP2
PostgreSQL 8.1.4
Apache 2.0.58
PHP 5
Re: [PHP] resize image and store it to DB
On 5/1/07, Alain Roger [EMAIL PROTECTED] wrote:
Hi,
I allow web application users to insert their own picture into database.
but i defined a max size limit 130 px width by 160px height.
so for that i determine the max ratio in case of picture does not have this
size.
after that i resize it and would like to store it to DB, however i have some
problem once it is resized.
here is my code :
data = file_get_contents($_FILES['uploadedfile']['tmp_name']);
$img = imagecreatefromstring($data);
$width = imagesx($img);
$height = imagesy($img);
$maxwidth = 130; //130px
$maxheight = 160; //160px
$ratio =0.00;
if($width $maxwidth || $height$maxheight)// image is somehow
bigger than 160px * 130px
{
if($width $maxwidth)
{
$ratio = $maxwidth/$width;
}
if($height$maxheight)
{
// always take the smallest ratio
$ratio = ($maxheight/$height) $ratio ? $ratio : ($maxheight/$height);
}
}
else // both $width and $height are smaller than max, so we need to zoom
{
$i=0.00;
$i=($maxwidth/$width);
$i = ($maxheight/$height) $i ? $i : ($maxheight/$height);
$ratio = $i;
}
$newwidth = $width*$ratio;
$newheight = $height*$ratio;
$thumb = imagecreatetruecolor($newwidth, $newheight);
imagecopyresized($thumb, $img, 0, 0, 0, 0, $newwidth, $newheight, $width,
$height);
$escaped = pg_escape_bytea($thumb); // does not work and it's normal
$thumb is an image, so ho can i make it useful for pg_escape_bytea function
?
i do not want to create a tmp file on server and after load it.
I would like to do it stored image directly into DB on-fly.
thanks alot,
--
Alain
I don't know if there's a better way, but you could try output
buffering, so that you start it, output the image with imagejpeg,
imagepng, imagegif, etc. and then get the contents of the buffer.
Tijnema
--
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Re: [PHP] resize image and store it to DB
On Tue, 2007-05-01 at 12:59 +0200, Tijnema ! wrote: I don't know if there's a better way, but you could try output buffering, so that you start it, output the image with imagejpeg, imagepng, imagegif, etc. and then get the contents of the buffer. That's what I'd suggest also... since it's what I do :) Cheers, Rob. -- .. | InterJinn Application Framework - http://www.interjinn.com | :: | An application and templating framework for PHP. Boasting | | a powerful, scalable system for accessing system services | | such as forms, properties, sessions, and caches. InterJinn | | also provides an extremely flexible architecture for | | creating re-usable components quickly and easily. | `' -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] resize image and store it to DB
At 12:54 PM +0200 5/1/07, Alain Roger wrote: i do not want to create a tmp file on server and after load it. I would like to do it stored image directly into DB on-fly. Why? My understanding is that when you upload a file, it has to go somewhere. It might as well go into a tmp folder/file that php handles (creates/deletes), right? Or is this something that can be handled totally within memory? And if so, what's the difference, speed, security, what? Cheers, tedd -- --- http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] resize image and store it to DB
On Tue, 2007-05-01 at 11:08 -0400, tedd wrote: At 12:54 PM +0200 5/1/07, Alain Roger wrote: i do not want to create a tmp file on server and after load it. I would like to do it stored image directly into DB on-fly. Why? My understanding is that when you upload a file, it has to go somewhere. It might as well go into a tmp folder/file that php handles (creates/deletes), right? Or is this something that can be handled totally within memory? And if so, what's the difference, speed, security, what? If you're going to put it in a database, then there's no sense incurring the filesystem overhead of a temporary file. It can indeed be done completely in memory by using output buffering. Cheers, Rob. -- .. | InterJinn Application Framework - http://www.interjinn.com | :: | An application and templating framework for PHP. Boasting | | a powerful, scalable system for accessing system services | | such as forms, properties, sessions, and caches. InterJinn | | also provides an extremely flexible architecture for | | creating re-usable components quickly and easily. | `' -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
