Bug #77943 [NEW]: imageantialias($image, false); does not work

From: andrew dot moyns at sanofi dot com Operating system: Windows PHP version: 7.3.4 Package: GD related Bug Type: Bug Bug description:imageantialias($image, false); does not work Description: ------------ PHP 7.3.4 nts 64bit Unable to turn off antialiasing for an image, resulting in inability to draw lines with thickness > 1 Expected operation is observed in PHP 5.5.38 Test script: --------------- <?php header('Cache-Control: no-cache'); header('Content-type: image/png'); $width = 400; $height = 300; $im = imagecreatetruecolor($width, $height); $white = imagecolorallocate($im, 255, 255, 255); $blue = imagecolorallocate($im, 0, 0, 255); imageantialias($im, false); imagefilledrectangle($im, 0, 0, $width-1, $height-1, $white); imageline($im, 0, 0, $width, $height, $blue); imagesetthickness($im, 3); imageline($im, 10, 0, $width, $height-10, $blue); imagepng($im); ?> Expected result: ---------------- PNG image showing two blue lines, not antialiased, one 1 pixel wide, one 3 pixels wide Actual result: -------------- PNG image showing two blue lines, antialiased, both 1 pixel wide. -- Edit bug report at https://bugs.php.net/bug.php?id=77943&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77943&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77943&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77943&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77943&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77943&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77943&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77943&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77943&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77943&r=support Expected behavior: https://bugs.php.net/fix.php?id=77943&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77943&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77943&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77943&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77943&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77943&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77943&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77943&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77943&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77943&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77943&r=mysqlcfg