From: matteosistisette at gmail dot com Operating system: PHP version: 5.3.25 Package: GD related Bug Type: Bug Bug description:imagecopyresized doesn't handle negative width/height
Description: ------------ There's no reason why imagecopyresized shouldn't accept and properly handle a negative width and/or height as source or target dimentions. It's perfectly natural to copy a rectanguar region of an image while applying it a negative scale so as to flip it. It's totally ridiculous that you have to copy, flip and then copy it again resized. Especially considering that prior to 5.5 imageflip doesn't even exist. At the very least negative dimensions should be supported on either source or target, though the normal way would be to support both. Test script: --------------- imagecopyresized($img,$img,0,$h=imagesy($img),0,0,$w=imagesx($img),-$h,$w,$h); OR imagecopyresized($img,$img,0,0,0,$h=imagesy($img),$w=imagesx($img),$h,$w,-$h); Expected result: ---------------- image should be flipped vertically Actual result: -------------- An error is issued: imagecopyresized(): Invalid image dimensions -- Edit bug report at https://bugs.php.net/bug.php?id=64862&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=64862&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=64862&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=64862&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=64862&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=64862&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=64862&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=64862&r=needscript Try newer version: https://bugs.php.net/fix.php?id=64862&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=64862&r=support Expected behavior: https://bugs.php.net/fix.php?id=64862&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=64862&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=64862&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=64862&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64862&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=64862&r=dst IIS Stability: https://bugs.php.net/fix.php?id=64862&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=64862&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=64862&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=64862&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=64862&r=mysqlcfg
