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Change height/width of image in upload

Posted on 2007-03-26
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Medium Priority
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Last Modified: 2008-02-01
I have this code that I use to upload an original image and then two smaller versions. It works fine.

CODE
-----------------
<?
if (!isset($_POST['action'])) {
?>
                  <form action="" method="POST" enctype="multipart/form-data">
                        <input type="hidden" name="MAX_FILE_SIZE" value="2500000">
                        Select an image: <input type="file" name="imgfile" class="button"><br>
                        <br>
                        <center><font size="2">
                              <br>
                              For best results, use the dimensions (Height = 167px, Width = 200px).<br>
                              <br>
                              Please note: Only "jpg" images are currently supported. Files ending in ".jpeg" must be renamed to ".jpg" in order to be uploaded.<br>
                              <br>
                        </font>
                        <br>
                        <input type="hidden" name="action" value="do_upload">
                        <input type="submit" value="Submit Image">
                  </form><br><br>

<?

$result = mysql_query("SELECT * FROM bandinfo WHERE userid = '$ud_id'");
$num = mysql_num_rows($result);
$i = 0;
$pic = mysql_result($result,$i,"pic");

if (!empty($pic)){
?>
<?      
} else {
?>
<?
}
?>

<?
} elseif ($_POST['action'] == "do_upload") {
      $name = $_FILES['imgfile']['name'];
      if ($_FILES['imgfile']['type'] != 'image/jpeg' and $_FILES['imgfile']['type'] != 'image/pjpeg') {

?>

<?
exit;
      }
     
      $uploaddir1 = "pics";
      $uploaddir2 = "pics";
      $uploaddir3 = "pics";
     
     
      $final_filename1 = $ud_id."_l.jpg";
      $final_filename2 = $ud_id."_m.jpg";
      $final_filename3 = $ud_id."_s.jpg";
     
      $imgfile = $_FILES['imgfile']['tmp_name'];
     
      if (is_uploaded_file($imgfile)) {
            $newfile = $uploaddir1 . "/" . $final_filename1;
            copy($imgfile, $newfile);
           
            resize_me ($imgfile, $uploaddir2, $final_filename2, "75");
            resize_me ($imgfile, $uploaddir3, $final_filename3, "50");
           
            $query = "UPDATE `bandinfo` SET `pic` = '$ud_id' WHERE `userid` = '$ud_id'";
            mysql_query($query) or die('Error, insert query failed');
           
      }
     
?>

<?
}
           
function resize_me ($img, $path, $name, $percent) {
      //image file path
      //the folder to save to
      //the name to use when saving
      //percent to resize
     
      $orig_image = $img;
     
      $image_stats = GetImageSize($orig_image);
      $imagewidth = $image_stats[0];
      $imageheight = $image_stats[1];
      $img_type = $image_stats[2];
      $new_w = $imagewidth * $percent;
      $new_w = round($new_w / 100);
      $ratio = ($imagewidth / $new_w);
      $new_h = round($imageheight / $ratio);

      if ($img_type=="2") {
            $src_img = imagecreatefromjpeg($orig_image);
            $dst_img = imagecreatetruecolor($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, "$path"."/$name");
            } elseif  ($img_type=="3") {
            $dst_img=imagecreatetruecolor($new_w,$new_h);
            $src_img=ImageCreateFrompng($orig_image);
            imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,ImageSX($src_img),ImageSY($src_img));
            Imagepng($dst_img, "$path"."/$name");
      }
}

?>

---------------


Is it possible to modify it so that I first resize the original image to Height = 167px, Width = 200px, save that file as the original and then create the smaller versions?
0
Comment
Question by:MDauphinais1
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3 Comments
 
LVL 15

Accepted Solution

by:
babuno5 earned 2000 total points
ID: 18798221
I think the following code should work as per your requirement

    if (is_uploaded_file($imgfile)) {
            $newfile = $uploaddir1 . "/" . $final_filename1;
//            copy($imgfile, $newfile);
            resize_me ($imgfile, $uploaddir1, $final_filename1, '',167,200);
            resize_me ($newfile, $uploaddir2, $final_filename2, "75");
            resize_me ($newfile, $uploaddir3, $final_filename3, "50");
           
            $query = "UPDATE `bandinfo` SET `pic` = '$ud_id' WHERE `userid` = '$ud_id'";
            mysql_query($query) or die('Error, insert query failed');
           
      }


function resize_me ($img, $path, $name, $percent,$height="",$width="") {
      //image file path
      //the folder to save to
      //the name to use when saving
      //percent to resize
     
      $orig_image = $img;
     
      $image_stats = GetImageSize($orig_image);
      $imagewidth = $image_stats[0];
      $imageheight = $image_stats[1];
      $img_type = $image_stats[2];
            if($width == "")
            {
                  $new_w = $imagewidth * $percent;
                  $new_w = round($new_w / 100);
            }
            else
                  $new_w      = $width;
      
            if($height == "")
            {
            $ratio = ($imagewidth / $new_w);
              $new_h = round($imageheight / $ratio);
            }
            else
                  $new_h = $height;

      if ($img_type=="2") {
            $src_img = imagecreatefromjpeg($orig_image);
            $dst_img = imagecreatetruecolor($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, "$path"."/$name");
            } elseif  ($img_type=="3") {
            $dst_img=imagecreatetruecolor($new_w,$new_h);
            $src_img=ImageCreateFrompng($orig_image);
            imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,ImageSX($src_img),ImageSY($src_img));
            Imagepng($dst_img, "$path"."/$name");
      }
}
0
 
LVL 6

Expert Comment

by:deresh
ID: 18798225
yes it is possible, but you will loose original aspect rato of image.

you just have to copy whole resize_me function to for example resize_me_fixed and replace $new_h with 176 and $new_w with 200. Then first call this new modified function and then call old one with 75 and 50 percent to make two smaller pictures.
0
 

Author Comment

by:MDauphinais1
ID: 18798629
That worked as posted. Thanks.
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