imagepng wanting to close your stream won't bother you, as long as your stream wrapper doesn't destroy the data when it is closed (streamclose method called). $thmb = imagecreatetruecolor($newWidth, $newHeight) Then you pass this stream (actually you just need to pass the URI for this stream) to imagepng. $newWidth = 1.0*$size/$sourceHeight*$sourceWidth $newHeight = 1.0*$size/$sourceWidth*$sourceHeight I use imagecreatetruecolor() along with imagecopyresampled() to generate the thumbnail, like this: function _resizeImageToFit($resource, $size) This image does not display in the browser, nor can it be opened by Preview (on MacOS). It actually only contains 33 bytes (with any source PNG that I've tried so far). I call the appropriate image() function to save in the same format as the original. You can rate examples to help us improve the quality of examples.
Php imagejpeg imagepng imagegif code#
My code works fine for JPEG and GIF, but if I upload a PNG file, the resulting thumbnail is invalid. I am using the GD library to automatically generate a thumbnail version of an uploaded image. These are the top rated real world PHP examples of imagewebp extracted from open source projects. imagepng() - Output a PNG image to either the browser or a file imagewbmp() - Output.
The path or an open stream resource (which is automatically closed after this function returns) to save the file to. I call the appropriate image_() function to save in the same format as the original. imagegif() creates the GIF file in file from the image image. A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor(). I am using the GD library to automatically generate a thumbnail version of an uploaded image.
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