image upload and resize question

#1 (**permalink**) 02-09-2005

I have a "file upload form" that works OK, but I have been unsuccessful
in my attempt to also resize the uploaded .JPG (if it is too wide),
over-writing the original .JPG, and then create and save a thumbnail.jpg
.... all at the same time. Links to a working example would be
appreciated. Thanks.

#2 (**permalink**) 02-09-2005

could you show the html form, and the php code that deals with the file
to save it and tries to resize it?

DH wrote:
> I have a "file upload form" that works OK, but I have been
unsuccessful
> in my attempt to also resize the uploaded .JPG (if it is too wide),
> over-writing the original .JPG, and then create and save a
thumbnail.jpg
> ... all at the same time. Links to a working example would be
> appreciated. Thanks.

#3 (**permalink**) 02-09-2005

I noticed that Message-ID: <7cGdnVcyXcwmHJTfRVn-vQ@comcast.com> from DH
contained the following:

>I have a "file upload form" that works OK, but I have been unsuccessful
>in my attempt to also resize the uploaded .JPG (if it is too wide),
>over-writing the original .JPG, and then create and save a thumbnail.jpg
>... all at the same time. Links to a working example would be
>appreciated.

I've got some code that needs tidying up, but you are welcome to have a
look.

$thumbpath = "images/thumb/";
$mainpath="images/main/";
$max_size = 1000000;

if (!isset($_FILES['userfile'])) exit;

if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {

if ($_FILES['userfile']['size']>$max_size)
{ echo "The file is too big \n"; exit; }

if($_FILES['userfile']['type']=="image/gif"){
$createfunction="imagecreatefromgif";}
else{$createfunction="imagecreatefromjpeg";}

if (($_FILES['userfile']['type']=="image/gif") ||
($_FILES['userfile']['type'])=="image/pjpeg" ||
($_FILES['userfile']['type']=="image/jpeg")) {

//check if file already uploaded
//if (file_exists($thumbpath ."s_". $_FILES['userfile']['name'])) { echo
"The file already exists \n"; exit; }

//make a copy of original file
//$res = copy($_FILES['userfile']['tmp_name'], $path .
//$_FILES['userfile']['name']);

//create thumbnail image
$src_img = $createfunction($_FILES['userfile']['tmp_name']);
$new_w = 120;
$new_h = imagesy($src_img)/(imagesx($src_img)/$new_w);
$dst_img = imagecreatetruecolor($new_w,$new_h);
imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_w, $new_h,
imagesx($src_img), imagesy($src_img));
imagejpeg($dst_img, $thumbpath ."s_".
$_FILES['userfile']['name'], 100);

//create big image
if(imagesx($src_img)>450){
$new_w = 450;
$new_h = imagesy($src_img)/(imagesx($src_img)/$new_w);
$dst_img = imagecreatetruecolor($new_w,$new_h);
$res=imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_w,
$new_h, imagesx($src_img), imagesy($src_img));
imagejpeg($dst_img, $path ."b_".
$_FILES['userfile']['name'], 50);
$notify = "Main image resampled";
}
else{
$res = copy($_FILES['userfile']['tmp_name'], $mainpath
.."b_".$_FILES['userfile']['name']);
$notify = "Main image not
resampled";
}

if (!$res) { echo "Upload
failed! \n"; exit; } else { echo "Upload sucessful! \n";

}

$filename=$_FILES['userfile']['name'];
printf("Main :
%sb_%s \n",$path,$filename);
printf("Thumbnail :
%ss_%s \n",$thumbpath,$filename);
//echo "Main File Name:
".$_FILES['userfile']['name']." \n";
echo "Original File Size: 
".$_FILES['userfile']['size']." bytes \n";
echo "File Type:
".$_FILES['userfile']['type']." \n";
echo "$notify. \n";
} else { echo "Please use a .jpg or a .gif file \n"; exit; }

//printf("<img src=\"%s%s\">",$path,$filename);
//printf("<img src=\"%sb_%s\"alt=\"%s\">",$path,$filename,$mainur l_alt);
printf("Image Thumbnail:
 <img
src=\"%ss_%s\"alt=\"%s\"> ",$thumbpath,$filename,$thumburl_alt);
imagedestroy($src_img);
imagedestroy($dst_img);
}
//end of image upload

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

#4 (**permalink**) 02-09-2005

I noticed that Message-ID: <30fj01tc9o4anljstjhlnn8sr914bat8vu@4ax.com>
from Geoff Berrow contained the following:

>I've got some code that needs tidying up, but you are welcome to have a
>look.

For instance s/$path/$mainpath

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

#5 (**permalink**) 02-09-2005

Geoff Berrow wrote:
> I noticed that Message-ID: <7cGdnVcyXcwmHJTfRVn-vQ@comcast.com> from DH
> contained the following:
>
>
>>I have a "file upload form" that works OK, but I have been unsuccessful
>>in my attempt to also resize the uploaded .JPG (if it is too wide),
>>over-writing the original .JPG, and then create and save a thumbnail.jpg
>>... all at the same time. Links to a working example would be
>>appreciated.
>
>
> I've got some code that needs tidying up, but you are welcome to have a
> look.
>
>
>
> $thumbpath = "images/thumb/";
> $mainpath="images/main/";
> $max_size = 1000000;
>
> if (!isset($_FILES['userfile'])) exit;
>
>
> if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
>
> if ($_FILES['userfile']['size']>$max_size)
> { echo "The file is too big \n"; exit; }
>
> if($_FILES['userfile']['type']=="image/gif"){
> $createfunction="imagecreatefromgif";}
> else{$createfunction="imagecreatefromjpeg";}
>
> if (($_FILES['userfile']['type']=="image/gif") ||
> ($_FILES['userfile']['type'])=="image/pjpeg" ||
> ($_FILES['userfile']['type']=="image/jpeg")) {
>
> //check if file already uploaded
> //if (file_exists($thumbpath ."s_". $_FILES['userfile']['name'])) { echo
> "The file already exists \n"; exit; }
>
> //make a copy of original file
> //$res = copy($_FILES['userfile']['tmp_name'], $path .
> //$_FILES['userfile']['name']);
>
> //create thumbnail image
> $src_img = $createfunction($_FILES['userfile']['tmp_name']);
> $new_w = 120;
> $new_h = imagesy($src_img)/(imagesx($src_img)/$new_w);
> $dst_img = imagecreatetruecolor($new_w,$new_h);
> imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_w, $new_h,
> imagesx($src_img), imagesy($src_img));
> imagejpeg($dst_img, $thumbpath ."s_".
> $_FILES['userfile']['name'], 100);
>
> //create big image
> if(imagesx($src_img)>450){
> $new_w = 450;
> $new_h = imagesy($src_img)/(imagesx($src_img)/$new_w);
> $dst_img = imagecreatetruecolor($new_w,$new_h);
> $res=imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_w,
> $new_h, imagesx($src_img), imagesy($src_img));
> imagejpeg($dst_img, $path ."b_".
> $_FILES['userfile']['name'], 50);
> $notify = "Main image resampled";
> }
> else{
> $res = copy($_FILES['userfile']['tmp_name'], $mainpath
> .."b_".$_FILES['userfile']['name']);
> $notify = "Main image not
> resampled";
> }
>
> if (!$res) { echo "Upload
> failed! \n"; exit; } else { echo " class=\"indent10bold\">Upload sucessful! \n";
>
> }
>
> $filename=$_FILES['userfile']['name'];
> printf("Main :
> %sb_%s \n",$path,$filename);
> printf("Thumbnail :
> %ss_%s \n",$thumbpath,$filename);
> //echo "Main File Name:
> ".$_FILES['userfile']['name']." \n";
> echo "Original File Size: 
> ".$_FILES['userfile']['size']." bytes \n";
> echo "File Type:
> ".$_FILES['userfile']['type']." \n";
> echo "$notify. \n";
> } else { echo "Please use a .jpg or a .gif file \n"; exit; }
>
> //printf("<img src=\"%s%s\">",$path,$filename);
> //printf("<img src=\"%sb_%s\"alt=\"%s\">",$path,$filename,$mainur l_alt);
> printf("Image Thumbnail:
> <img
> src=\"%ss_%s\"alt=\"%s\"> ",$thumbpath,$filename,$thumburl_alt);
> imagedestroy($src_img);
> imagedestroy($dst_img);
> }
> //end of image upload
>

The code that I've come up with now, by combining an upload script from
http://www.phpfreaks.com/quickcode/code/272.php
along with Geoff Berrow's input is rather lengthy and is posted here:
http://phpvs.com/misc/imgupld.php

The script needs additional work, in terms of deleting the original
image after sucessfully creating a properly sized image and thumbnail.
Also exploding the filename on '.' and appending _new and _thumb
(instead of prepending 'new_' and 'thumb_').

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