saving images

[sandravega]

Hi
I'm trying to accomplish this:
If I let the users upload images in my web, I want to get some control over the size of the images they´re uploading. Also, I want to save the images as separate files in a directory, not in a blob field in a database.
So my code gets the image from the path provided by the user, gets its data, reduces it and then tries to save in "nuevo_c.jpg" file.
The "nuevo_c.jpg" file appears where expected, but it's a 1kb .jpg and it contains no image, just black...

¿does anybody knows what am I doing wrong? ¿what's missing?

thanks

CODE
//gets the path given by the user in the form
$src=$HTTP_POST_VARS['imagen'];
//reads it
$data = fread(fopen($src, "rb"), filesize($src));
//creates a new image
$im = imagecreatefromstring($data);
//gets its size
$width = imagesx($im);
$height = imagesy($im);

// Set thumbnail-width to 80pixel
$imgw = 80;

// calculate thumbnail-height from given width to maintain aspect ratio
$imgh = $height / $width * $imgw;

// create new image using thumbnail-size
$thumb=ImageCreate($imgw,$imgh);

// copy original image to thumbnail
ImageCopyResized($thumb,$im,0,0,0,0,$imgw,$imgh,ImageSX($im),ImageSY($im));

//write image to file
$nmini="nuevo_c.jpg";

$mini=fopen ($nmini, "wb");

fputs($mini, $thumb);

fclose($mini);

END OF CODE

 

[LordGarfield]

hmmm I would do it with the $_FILE variable.

then you can use somethng like this where imagefile = the name of my filebox in my form.

if ($_FILES['img']['size'] <= 2000000)
{
copy ($_FILES['img']['tmp_name'], "./img/".$_FILES['img']['name']) or die ("Could not copy");
}
else
echo "Het bestand is te groot. Maximale bestandsgrote is 2 megabytes.";

except tmp_name, size and name you also get the attribute type
$_FILES['img']['type']

this one tells you if it is a jpg our a gif or whatever.

best regards.


tank you,

(>" "<)
(='o'=)
-(,,)-(,,)-----
|LORD_GARFIELD|
---------------

 

[sandravega]

Thanks Lord Garfield
The $files wasn't the solution since it allows me to copy but not to resize...
the answer was so simple,
I was using fwrite to write and I should use "imageJpeg"
so the right code was:

$src=$HTTP_POST_VARS['imagen'];
//$im=fopen($src, "rb");
$data = fread(fopen($src, "rb"), filesize($src));
//$data = addslashes(fread(fopen($src, "rb"), filesize($src)));
$im = imagecreatefromstring($data);
$width = imagesx($im);
$height = imagesy($im);

// Set thumbnail-width to 100 pixel
$imgw = 80;

// calculate thumbnail-height from given width to maintain aspect ratio
$imgh = $height / $width * $imgw;

// create new image using thumbnail-size
$thumb=ImageCreate($imgw,$imgh);
// copy original image to thumbnail
ImageCopyResized($thumb,$im,0,0,0,0,$imgw,$imgh,ImageSX($im),ImageSY($im));
//write image to file
$nombre = "nuevo";
$nmini = "nuevo_c.jpg";
$ncom = "nuevo_g.jpg";
imagejpeg($thumb,$nmini,75);