can't get image resizer to work properly - it's almost there!

[scmeeker]

I'm able to get the image file name in the database, the image to the right place BUT the problem is the image is totally black and after it's uploaded, a whole bunch of warnings appear.  Here are the warnings:

 

Warning: getimagesize(image_files/image-16.jpg) [function.getimagesize]: failed to open stream: No such file or directory in C:\Desktop\xampp\htdocs\image-crop-demo.php on line 37

 

Warning: Division by zero in C:\Desktop\xampp\htdocs\image-crop-demo.php on line 54

 

Warning: Division by zero in C:\Users\Samantha\Desktop\xampp\htdocs\image-crop-demo.php on line 71

 

Warning: imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions in C:\Desktop\xampp\htdocs\image-crop-demo.php on line 78

 

Warning: imagecopyresampled() expects parameter 1 to be resource, boolean given in C:\Desktop\xampp\htdocs\image-crop-demo.php on line 86

 

Warning: imagecopy() expects parameter 2 to be resource, boolean given in C:\Desktop\xampp\htdocs\image-crop-demo.php on line 102

 

Here is the form:

<form action="image-crop-demo.php?username=<?php echo $username ?>" method="post" enctype="multipart/form-data">
  Upload an image for processing<br>
  <input type="file" name="Image1"><br>
  <input type="submit" value="Upload">
</form>

 

And here is the form action file:

 

 
$username = $_GET['username'];

define( 'DESIRED_IMAGE_WIDTH', 150 );
  define( 'DESIRED_IMAGE_HEIGHT', 150 );

  $source_path = $_FILES[ 'Image1' ][ 'name' ];  

$sql="UPDATE thumbnail SET Image1='$source_path' WHERE username = '$username'";

if (!mysql_query($sql))

  {

  die('Error: ' . mysql_error());

  } 
else {

  //
  // Add file validation code here
  //

  list( $source_width, $source_height, $source_type ) = getimagesize( $source_path );

  switch ( $source_type )
  {
    case IMAGETYPE_GIF:
      $source_gdim = imagecreatefromgif( $source_path );
      break;

    case IMAGETYPE_JPEG:
      $source_gdim = imagecreatefromjpeg( $source_path );
      break;

    case IMAGETYPE_PNG:
      $source_gdim = imagecreatefrompng( $source_path );
      break;
  }

  $source_aspect_ratio = $source_width / $source_height;
  $desired_aspect_ratio = DESIRED_IMAGE_WIDTH / DESIRED_IMAGE_HEIGHT;

  if ( $source_aspect_ratio > $desired_aspect_ratio )
  {
    //
    // Triggered when source image is wider
    //
    $temp_height = DESIRED_IMAGE_HEIGHT;
    $temp_width = ( int ) ( DESIRED_IMAGE_HEIGHT * $source_aspect_ratio );
  }
  else
  {
    //
    // Triggered otherwise (i.e. source image is similar or taller)
    //
    $temp_width = DESIRED_IMAGE_WIDTH;
    $temp_height = ( int ) ( DESIRED_IMAGE_WIDTH / $source_aspect_ratio );
  }

  //
  // Resize the image into a temporary GD image
  //

  $temp_gdim = imagecreatetruecolor( $temp_width, $temp_height );
  imagecopyresampled(
    $temp_gdim,
    $source_gdim,
    0, 0,
    0, 0,
    $temp_width, $temp_height,
    $source_width, $source_height
  );

  //
  // Copy cropped region from temporary image into the desired GD image
  //

  $x0 = ( $temp_width - DESIRED_IMAGE_WIDTH ) / 2;
  $y0 = ( $temp_height - DESIRED_IMAGE_HEIGHT ) / 2;

  $desired_gdim = imagecreatetruecolor( DESIRED_IMAGE_WIDTH, DESIRED_IMAGE_HEIGHT );
  imagecopy(
    $desired_gdim,
    $temp_gdim,
    0, 0,
    $x0, $y0,
    DESIRED_IMAGE_WIDTH, DESIRED_IMAGE_HEIGHT
  );

  //
  // Render the image
  // Alternatively, you can save the image in file-system or database

$remote_file = "image_files/".$_FILES["Image1"]["name"];
imagejpeg($desired_gdim,$remote_file);

}//

 

[jcbones]

Try changing the source file to:

$source_path = $_FILES[ 'Image1' ][ 'tmp_name' ];

[scmeeker]

I made the change but the image is still showing up as a black square and now at least its down to one warning:

 

Warning: imagejpeg() [function.imagejpeg]: Unable to open 'image_files/C:\Desktop\xampp\tmp\php659A.tmp' for writing: Invalid argument in C:\Users\Samantha\Desktop\xampp\htdocs\image-crop-demo.php on line 109

 

The problem also is that its changing the file name to a temporary file in the database. Any other suggestions?

 

I appreciate your help.

 

[jcbones]

You need to pass the $_FILES['Image1']['name'] into the database.

 

$source_path = $_FILES[ 'Image1' ][ 'tmp_name' ];  
$real_name = $_FILES['Image1']['name'];

$sql="UPDATE thumbnail SET Image1='$real_name' WHERE username = '$username'";

 

I don't know why you are getting the warning from imagejpeg().  It is the last function in this script.  The contents of $_FILES['Image1']['name'] doesn't look right.  Throw some de-bugging lines in there to make sure you are getting desired data.

 

At the top of the page, I would add this for de-bugging purposes.

 

echo 'Dumping Data for Files Array: <pre>'; print_r($_FILES); echo '</pre>';

 

But, that is just me.