Creating a thumbnail from an uploaded image

Question

I'm wanting to create a thumbnail from a user uploaded image so the image doesn't look squashed. But also would like a copy of the original image.. So I would like the original image to send the original image to my server and also create a thumb version and send it to my server so I can call each of them for each user that uploads their own image.

My user table has 2 tables

`user_pic` longblob NOT NULL, `user_pic_small` longblob NOT NULL, 

I'm not crash hot with the image side of coding but this is what I have so far.

Imageupload.php

> <form id="myForm" action="include/media.profileimage.upload.php" > method="POST" enctype="multipart/form-data" target="ifr1"> >                   <input type = "file" name = "image_data" class = "input_text" style="width:800px;" >     >                   <input type = "submit" name = "submit"   class = "btn_login" value = "Upload"> >         </form> 

media.profileimage.upload.php

if(isset($_FILES['image_data'])){        if(is_uploaded_file($_FILES['image_data']['tmp_name'])) {              // prepare the image for insertion                 $imgData =addslashes (file_get_contents($_FILES['image_data']['tmp_name']));              // get the image info..               $size = getimagesize($_FILES['image_data']['tmp_name']);               // our sql query             $creator_id     =   $_SESSION['id'];             $sql = "UPDATE users SET user_pic='".$imgData."' WHERE id=$creator_id";             $sql2 = "INSERT INTO userphotos(photo_ownerid,photo_ispublic, photo_name, photo_caption, photo_imagedata) VALUES ($creator_id,1,'Profile Picture','Profile Picture','$imgData')";              // insert the image             if(!mysql_query($sql)) {                 echo "Fail. It broke.";             }else{             $c=mysql_query($sql2);                  echo "<script> parent.alert('Image Uploaded','',1000);</script>";             }         }     } 

Would appreciate any help or guidence. Thankyou

Answer 1

UPDATE:

If you want to take advantage of Imagick (if it is installed on your server). Note: I didn't use Imagick's nature writeFile because I was having issues with it on my server. File put contents works just as well.

<?php /**  *   * Generate Thumbnail using Imagick class  *    * @param string $img  * @param string $width  * @param string $height  * @param int $quality  * @return boolean on true  * @throws Exception  * @throws ImagickException  */ function generateThumbnail($img, $width, $height, $quality = 90) {     if (is_file($img)) {         $imagick = new Imagick(realpath($img));         $imagick->setImageFormat('jpeg');         $imagick->setImageCompression(Imagick::COMPRESSION_JPEG);         $imagick->setImageCompressionQuality($quality);         $imagick->thumbnailImage($width, $height, false, false);         $filename_no_ext = reset(explode('.', $img));         if (file_put_contents($filename_no_ext . '_thumb' . '.jpg', $imagick) === false) {             throw new Exception("Could not put contents.");         }         return true;     }     else {         throw new Exception("No valid image provided with {$img}.");     } }  // example usage try {     generateThumbnail('test.jpg', 100, 50, 65); } catch (ImagickException $e) {     echo $e->getMessage(); } catch (Exception $e) {     echo $e->getMessage(); } ?> 

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I have been using this, just execute the function after you store the original image and use that location to create the thumbnail. Edit it to your liking...

function makeThumbnails($updir, $img, $id) {     $thumbnail_width = 134;     $thumbnail_height = 189;     $thumb_beforeword = "thumb";     $arr_image_details = getimagesize("$updir" . $id . '_' . "$img"); // pass id to thumb name     $original_width = $arr_image_details[0];     $original_height = $arr_image_details[1];     if ($original_width > $original_height) {         $new_width = $thumbnail_width;         $new_height = intval($original_height * $new_width / $original_width);     } else {         $new_height = $thumbnail_height;         $new_width = intval($original_width * $new_height / $original_height);     }     $dest_x = intval(($thumbnail_width - $new_width) / 2);     $dest_y = intval(($thumbnail_height - $new_height) / 2);     if ($arr_image_details[2] == IMAGETYPE_GIF) {         $imgt = "ImageGIF";         $imgcreatefrom = "ImageCreateFromGIF";     }     if ($arr_image_details[2] == IMAGETYPE_JPEG) {         $imgt = "ImageJPEG";         $imgcreatefrom = "ImageCreateFromJPEG";     }     if ($arr_image_details[2] == IMAGETYPE_PNG) {         $imgt = "ImagePNG";         $imgcreatefrom = "ImageCreateFromPNG";     }     if ($imgt) {         $old_image = $imgcreatefrom("$updir" . $id . '_' . "$img");         $new_image = imagecreatetruecolor($thumbnail_width, $thumbnail_height);         imagecopyresized($new_image, $old_image, $dest_x, $dest_y, 0, 0, $new_width, $new_height, $original_width, $original_height);         $imgt($new_image, "$updir" . $id . '_' . "$thumb_beforeword" . "$img");     } } 

The above function creates images with a uniform thumbnail size. If the image doesn't have the same dimensions as the specified thumbnail size (proportionally), it just has blackspace on the top and bottom.