I'm using this script in a page called crop.php
Code: Select all
<?
header ("Content-type: image/jpeg");
$file_name=$_GET['f'];
$crop_height=$_GET['h'];
$crop_width=$_GET['w'];
$file_type= explode('.', $file_name);
$file_type = $file_type[count($file_type) -1];
$file_type=strtolower($file_type);
$original_image_size = getimagesize($file_name);
$original_width = $original_image_size[0];
$original_height = $original_image_size[1];
if($file_type=='jpg')
{
$original_image_gd = imagecreatefromjpeg($file_name);
}
if($file_type=='gif')
{ $original_image_gd = imagecreatefromgif($file_name);
}
if($file_type=='png')
{
$original_image_gd = imagecreatefrompng($file_name);
}
$cropped_image_gd = imagecreatetruecolor($crop_width, $crop_height);
$wm = $original_width /$crop_width;
$hm = $original_height /$crop_height;
$h_height = $crop_height/2;
$w_height = $crop_width/2;
if($original_width > $original_height )
{
$adjusted_width =$original_width / $hm;
$half_width = $adjusted_width / 2;
$int_width = $half_width - $w_height;
imagecopyresampled($cropped_image_gd ,$original_image_gd ,-$int_width,0,0,0, $adjusted_width, $crop_height, $original_width , $original_height );
}
elseif(($original_width < $original_height ) || ($original_width == $original_height ))
{
$adjusted_height = $original_height / $wm;
$half_height = $adjusted_height / 2;
$int_height = $half_height - $h_height;
imagecopyresampled($cropped_image_gd , $original_image_gd ,0,-$int_height,0,0, $crop_width, $adjusted_height, $original_width , $original_height );
}
else {
imagecopyresampled($cropped_image_gd , $original_image_gd ,0,0,0,0, $crop_width, $crop_height, $original_width , $original_height );
}
imagejpeg($cropped_image_gd);
?>
I crop an image using this tag:
Code: Select all
<img src="crop.php?h=100&w=100&f=pics/image.jpg" />
this is the problem:
if my image is a 500 x 450 px and I crop it with height 500px and width 50px, the crop function works, but cropping it with height 50px and width 500px, the crop function doesn't work and I see something like that:

The script resizes the whole image, adding a black background.
Why?
thanks