Changing imagesize while uploading.

lesP · 04-02-2008, 12:29 PM

Hi Guys!

I have done a uploading script, but I want to do, so when I upload an image the image should be stored in 3 different sizes. That means 3 different pictures. What is the easiest way to do that? Here is my upload-script:

PHP Code:


			
$filename = 'billeder/' . basename($_FILES['file']['name']);





        if (move_uploaded_file($_FILES['file']['tmp_name'], $filename)) {

            echo "File is valid, and was successfully uploaded.";

        } else {

            echo 'DEBUG: Fra: ' . $_FILES['file']['tmp_name'] . ' til ' . $filename . '<br>';

            echo "Possible file upload attack!";

        }    



        $sql = "INSERT INTO smykker (smykkenavn, beskrivelse, pris, varenr, billede, kategori, underkategori, leveringstid)

            VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s')";

        $sql = sprintf($sql,

            mysql_real_escape_string($_POST['smykkenavn']),

            mysql_real_escape_string($_POST['beskrivelse']),

            mysql_real_escape_string($_POST['pris']),

            mysql_real_escape_string($_POST['varenr']),

            mysql_real_escape_string($filename),

            mysql_real_escape_string($_POST['kategori']),

            mysql_real_escape_string($_POST['underkategori']),

            mysql_real_escape_string($_POST['leveringstid'])

            );



        $res = mysql_query($sql) or die(mysql_error());

        echo "Done<br>Klik <a href='upload.php'>her</a> for at gå tilbage.";

Jim · 04-09-2008, 06:57 AM

with imagecopyresampled() you can do that quite easily. And in your code, please check the file for mimetype and extention! :)

Orc · 04-10-2008, 01:50 PM

Quote:

Originally Posted by Jim

with imagecopyresampled() you can do that quite easily. And in your code, please check the file for mimetype and extention! :)

...or imagecopyresized incase he doesn't want it to change the pixels.

sketchMedia · 04-10-2008, 07:00 PM

easy really, here the script i use:

PHP Code:


			
function resizeImage($originalImage,$toWidth,$toHeight,$dest_img)
{
    list($width, $height) = getimagesize($originalImage);
    $xscale=$width/$toWidth;
    $yscale=$height/$toHeight;

    if ($yscale>$xscale)
   {
        $new_width = round($width * (1/$yscale));
        $new_height = round($height * (1/$yscale));
    }
    else 
    {
        $new_width = round($width * (1/$xscale));
        $new_height = round($height * (1/$xscale));
    }
    $imageResized = imagecreatetruecolor($new_width, $new_height);
    $imageTmp = imagecreatefromjpeg ($originalImage);
    imagecopyresampled($imageResized, $imageTmp, 0, 0, 0, 0, $new_width, $new_height, $width, $height);

    imagejpeg($imageResized, $dest_img);
}

resizeImage('test1.jpg', 400, 400, 'test_res2222222.jpg');

I have used this in the past, should be easy for you to modify, it takes into account image orientation (i.e. landscape/portrait) and scales accoringly. It olny accepts jpegs atm but like i say you its easy to customize it with the correct image format function. the php manual is useful here:

PHP: Image - Manual