Trouble Trying to Generate a Thumbnail Image?

[brent123456]

I am trying to make a thumbnail image but I keep getting all these errors.

 

Warning: imagesx(): supplied argument is not a valid Image resource in C:\myxampp\xampp\htdocs\seedguys\site_pages\includes\processaddseeds.php on line 147

 

Warning: imagesy(): supplied argument is not a valid Image resource in C:\myxampp\xampp\htdocs\seedguys\site_pages\includes\processaddseeds.php on line 148

 

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in C:\myxampp\xampp\htdocs\seedguys\site_pages\includes\processaddseeds.php on line 163

 

This is the code that I am using to make the thumbs, I have GD install and working I ran this script to test..

<?php
  if (function_exists('ImageCreateTrueColor')) {
      echo 'ok you already have GD';
  }else{
      echo 'sorry, it seems that GD is not installed';
  }
?>

 

It is saying that it is ok and I have GD.

 

Here is my code

if (is_uploaded_file($_FILES['image']['tmp_name'])) {
            (list($name, $ext) = explode('.', $_FILES['image']['name'])); // get the image ext
            $allowed_extensions = array("gif", "jpg", "jpe", "jpeg");
            if (!in_array($ext, $allowed_extensions)) {
                print 'This file is no allow for upload, your seeds were added by file was not uploaded';
                $i = '';
            }else{
            $image_name = md5(uniqid(rand())).".$ext";  // build the new file name
            if (move_uploaded_file($_FILES['image']['tmp_name'],
                "includes/uploaded_images/seed_images/$image_name")) { // move file here

                        echo 'The file has been uploaded!';
                        $image_name = 'includes/uploaded_images/seed_images/' . $image_name;
                        $thumb_name = $image_name;
                        $size = '100';
                        createthumb($image_name, $thumb_name ,$size,$size);
                        
                        } else { //the file couldn't be moved
                        
                            echo '<div class="error">The file could not be moved.</div>';
                            $i = '';
                            }
                             $i =  $image_name;
            }
                        } else {
                            $i = '';
                            }
        

 

here is the function...

 

function createthumb($name,$filename,$new_w,$new_h){
    $system=explode('.',$name);
    if (preg_match('/jpg|jpeg/',$system[1])){
        $src_img=imagecreatefromjpeg($name);
    }
    if (preg_match('/png/',$system[1])){
        $src_img=imagecreatefrompng($name);
    }
    
     if (preg_match('/gif/',$system[2])){
        $src_img=imagecreatefromgif($name);
    }    
    
    
       $old_x=imagesx($src_img);
       $old_y=imagesy($src_img);
            if ($old_x > $old_y) {
                $thumb_w=$new_w;
                $thumb_h=$old_y*($new_h/$old_x);
                }
                if ($old_x < $old_y) {
                    $thumb_w=$old_x*($new_w/$old_y);
                    $thumb_h=$new_h;
                }
                    if ($old_x == $old_y) {
                        $thumb_w=$new_w;
                        $thumb_h=$new_h;
                        }
                        
                        $dst_img=ImageCreateTrueColor($thumb_w,$thumb_h);
                        imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y); 
                        
                        if (preg_match("/png/",$system[1]))
                        {
                            imagepng($dst_img,$filename); 
                        } else {
                            imagejpeg($dst_img,$filename); 
                        }
                            createthumb($dst_img ,'includes/uploaded_images/' . $dst_img ,100,100); 
                            imagedestroy($dst_img); 
                            imagedestroy($src_img);
                            
                            if (preg_match("/gif/",$system[2]))
                        {
                            imagegif($dst_img,$filename); 
                        } else {
                            imagejpeg($dst_img,$filename); 
                        }
                            createthumb($dst_img ,'includes/uploaded_images/' . $dst_img ,100,100);
                            imagedestroy($dst_img); 
                            imagedestroy($src_img); 
                        }
                        

 

I hope someone can help me out with this.. Thanks

[no_one]

Hmm. Ever consider that none of the matches succeeded? Or maybe one did, but the image was never created/loaded?  Try testing $src_img to see if it is set before the imagesx/sy, see what happens. Or do print out something when and/or if an image is created. :S If not, then guess I'd need to look again.. heh.

Also, I'm confused as to why you use $system[1] for the first 2 file-ext types but $system[2] for the gif?

 

???

[brent123456]

function createthumb($name,$filename,$new_w,$new_h){
    $system=explode('.',$name);
    if (preg_match('/jpg|jpeg/',$system[1])){
        $src_img=imagecreatefromjpeg($name);
    }
    if (preg_match('/png/',$system[1])){
        $src_img=imagecreatefrompng($name);
    }
    
     if (preg_match('/gif/',$system[1])){
        $src_img=imagecreatefromgif($name);
    }
        
     echo $src_img;
     if ($src_img) {
       $old_x=imagesx($src_img);
       $old_y=imagesy($src_img);
            if ($old_x > $old_y) {
                $thumb_w=$new_w;
                $thumb_h=$old_y*($new_h/$old_x);
                }
                if ($old_x < $old_y) {
                    $thumb_w=$old_x*($new_w/$old_y);
                    $thumb_h=$new_h;
                }
                    if ($old_x == $old_y) {
                        $thumb_w=$new_w;
                        $thumb_h=$new_h;
                        }
                        
                        $dst_img=ImageCreateTrueColor($thumb_w,$thumb_h);
                        imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y); 
                        echo $dst_img;
                        if (preg_match("/png/",$system[1]))
                        {
                            imagepng($dst_img,$filename); 
                        } else {
                            imagejpeg('includes/uploaded_images/seed_images/thumbs/' . $dst_img,$filename); 
                        }
                            createthumb('includes/uploaded_images/' . $dst_img ,'includes/uploaded_images/seed_images/thumbs/' . $dst_img ,100,100); 
                             
                            
                            
                            if (preg_match("/gif/",$system[1]))
                        {
                            imagegif($dst_img,$filename); 
                        } else {
                            imagejpeg('includes/uploaded_images/seed_images/thumbs/' . $dst_img,$filename); 
                        }
                            createthumb('includes/uploaded_images/' . $dst_img ,'includes/uploaded_images/seed_images/thumbs/' . $dst_img ,100,100);
                             
                             
                        }

 

I added in an if statement to check the $scr_img and it now makes a thumbnail but it is overwriting the original image with the thumb. Is there anyway to change the thumb directory so i doesn't overwrite the main image file? All I want to do is to create a thumbnail from the original in a new directory and keep the original one in the same folder. I wish I knew how to get this.

[brent123456]

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