php-gdUsing antialias in GD
Note, that PHP GD lib has limited antialiasing capabilities. Alternative approach is to create larger image and resize it to apply smarter antialiasing.
<?php
$im = imagecreatetruecolor(400, 300);
imageantialias($im, true);
$c_black = imageColorAllocate($im, 0,0,0);
$c_green = imageColorAllocate($im, 46,204,64);
imagefilledellipse($im, 200, 150, 100, 100, $c_green);
imagePng($im, '/tmp/image.png');=ctrl + cimagecreatetruecolorcreates true color GD image object with specified width & height | imageantialiasenable antialiasing for the given image |
imageColorAllocatecreates color object to later use in image | imagefilledellipsecreates ellipse with specified coordinates, radius and color |
imagePngsaves image in PNG format to the given path | |
Usage example
<?php
$im = imagecreatetruecolor(400, 300);
imageantialias($im, true);
$c_black = imageColorAllocate($im, 0,0,0);
$c_green = imageColorAllocate($im, 46,204,64);
imagefilledellipse($im, 200, 150, 80, 80, $c_green);
imagePng($im, '/tmp/image.png');