On Tue, 29 Mar 2011 03:21:48 +0300, Andre Polykanine wrote: >[...] >My questions are: >1. what are the restrictions of ImageCopyResampled()? Can I make a jpg >image from a jpg one, and a png image from a png one? And what about >gif's?
Yes, or even a JPEG from a GIF, or a PNG from a JPEG, etc. But: imagecopyresampled works on image *resources*, which you create either as "blank canvases" or by reading from files. In your case, you want to create a resource from a file (JPEG, PNG, GIF etc.) and another as a blank canvas into which you will copy the original image, resampled (or resized). See the examples here: http://au2.php.net/manual/en/function.imagecopyresampled.php After the comment "// Resample" it: * creates a new blank image resource to copy into, i.e. $dst_image * creates an image by reading a file, i.e. $src_image * copies with resampling, i.e. from $src_image to $dst_image >2. I don't need to output the image as the script output, I need to >upload it as a file (replacing the uploaded larger file). Could I make >it with fwrite and then copy it to the server? All of the examples give >header("image/jpeg")... You can write the new image to a file using one of these: http://au2.php.net/manual/en/function.imagepng.php http://au2.php.net/manual/en/function.imagejpeg.php http://au2.php.net/manual/en/function.imagegif.php NB: see the following comments by tim (at) leethost (dot) com, regarding performance of imagecopyresampled vs imagecopyresized: http://au2.php.net/manual/en/function.imagecopyresampled.php#77679 http://au2.php.net/manual/en/function.imagecopyresampled.php#72606 Also check out ImageMagick, if your host provides it (or you can install it): http://au2.php.net/manual/en/book.imagick.php -- Ross McKay, Toronto, NSW Australia "Let the laddie play wi the knife - he'll learn" - The Wee Book of Calvin -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
