Help with GD Library Script

[sailorsmokey]

It has been approximately 5 years since I've last even looked at GD library scripts. And I don't remember them - at all. I've got this code going, but I can't figure out why it won't copy the image into the correct folder. I'm going to include the section where it's copying the image - maybe someone will see something in there. And if that all checks out, then I guess I'll keep searching the rest of the code for something that's out of place.

 

Absolutely no errors pop up when I run this code. The folder has 777 permissions. But after I run the code, no image appears in the "additionalpix" folder.

 

$dest="/PrivateInfo/additionalpix/$additionalpix_name";
$size = GetImageSize($additionalpix);

$image_types = array(  
'image/pjpeg' => '.jpg',
'image/jpeg' => '.jpg',
'image/jpg' => '.jpg',
'image/gif' => '.gif',
);


$filetype = $_FILES['additionalpix']['type'];
$extension = $image_types[$filetype]; 

//define size based on tall or wide
// Wide Image
if($size[0] > $size[1])
{  
if ($size[0]>250){//only modify it if it's larger
$image_width = 250;  
$image_height = (int)(250 * $size[1] / $size[0]);  
}else{
$image_width = $size[0];  
$image_height = $size[1]; 
}
}  

// Tall Image
else
{
if($size[1]>175){
$image_width = (int)(175 * $size[0] / $size[1]);
$image_height = 175;
}else{
$image_width = $size[0];  
$image_height = $size[1]; 
}
}

$gd_function_suffix = array(  
'.jpg' => 'JPEG',
'.gif' => 'GIF',
);


$function_suffix = $gd_function_suffix[$extension];
$function_to_read = 'ImageCreateFrom'.$function_suffix;
$function_to_write = 'Image' . $function_suffix;

// Read the source file
$source_handle = $function_to_read($additionalpix);
       
if ($source_handle) {
// Let's create a blank image
$destination_handle =
   ImageCreateTrueColor($image_width, $image_height);

// Now we resize it
ImageCopyResampled($destination_handle, $source_handle,
   0, 0, 0, 0, $image_width, $image_height, $size[0], $size[1]);
}

// Let's save
$function_to_write($destination_handle, $dest);

[Brian W]

You don't get any errors? do you have error_reporting(E_ALL) on for testing?

$function_to_write($destination_handle, $dest);

That throws up a flag with me at least when I read through it.

[sailorsmokey]

No, I didn't have the function error_reporting(E_ALL) on, but I just turned it on and ran it.  Again, no error pops up.  And I thought I had the $function_to_write set up correctly, but by your above post, I get the hint that I don't, but I don't know what I did wrong.  I have some examples in other areas of the Web site, and it looks correct compared to them. 

 

If you're feeling generous out there, pass me another hint, and I'll keep digging on this.  Thanks!

[michaellunsford]

yeah, that $function_to_write thing doesn't look right - and I can't locate a function named function_to_write.

 

There are several functions for saving images. Looks like you're using jpegs and gifs. The relative functions are imagejpeg() and imagegif(). http://php.net/imagejpeg http://php.net/imagegif

[sailorsmokey]

I think that function_to_write thing is part of the GD library, but I'm having trouble piecing this whole thing together.  Here's a tutorial I found on resizing thumbnails with the GD library that uses function_to_write:

 

http://www.sitepoint.com/article/php-gallery-system-minutes/5/

 

  If anyone has any further input on this, I'd love to fix what I already have, but if no one has any other suggestions, I will go with Michael's suggestion of using imagejpeg().  I was just hoping not to have to start over, but again, will do what I have to.

 

Thank you!

[michaellunsford]

I wrote this a few years back - still use it for resizing images:

 

<?php
ini_set("memory_limit","128M"); //optional - I find it useful if you're expecting really big files to be uploaded
function resize_image($func_im,$width,$height) {
if(imagesx($func_im)>imagesy($func_im)) {
	if(imagesx($func_im)<=$width) {
		$func_newim=imagecreatetruecolor(imagesx($func_im),imagesy($func_im));
		imagecopy($func_newim,$func_im,0,0,0,0,imagesx($func_im),imagesy($func_im));
	} else {
		$func_newim=imagecreatetruecolor($width,((imagesy($func_im)/imagesx($func_im))*$width));
		imagecopyresampled($func_newim,$func_im,0,0,0,0,$width,((imagesy($func_im)/imagesx($func_im))*$width),imagesx($func_im),imagesy($func_im));
	}
} else {
	if(imagesy($func_im)<=$height) {
		$func_newim=imagecreatetruecolor(imagesx($func_im),imagesy($func_im));
		imagecopy($func_newim,$func_im,0,0,0,0,imagesx($func_im),imagesy($func_im));
	} else {
		$func_newim=imagecreatetruecolor(((imagesx($func_im)/imagesy($func_im))*$height),$height);
		imagecopyresampled($func_newim,$func_im,0,0,0,0,((imagesx($func_im)/imagesy($func_im))*$height),$height,imagesx($func_im),imagesy($func_im));	
	}
}
return($func_newim);
}
//function ends - here's how I call it:

do {
if((key($_FILES)!="") AND (strlen(file_get_contents($_FILES[key($_FILES)]['tmp_name'])))) {
	$im=imagecreatefromstring(file_get_contents($_FILES[key($_FILES)]['tmp_name']));
	$newim=resize_image($im,300,240);
	$thumb=resize_image($im,75,75);
	imagejpeg($thumb,"/full/path/to/file/".$_FILES[key($_FILES)]['name'],90);
	imagejpeg($newim,"/full/path/to/file/".$_FILES[key($_FILES)]['tmp_name'],90);
}
}while(each($_FILES));
?>

[michaellunsford]

sorry, that $newim line should have 'name' instead of 'tmp_name'