Round

Round example
<?php 
$cmd 
" -size 400x300 xc:white -fill orange ".
" -draw \"circle 200,150 200,3\" -gaussian 1x1 -transparent ";
exec("convert $cmd orange mask.png");

exec("convert $input14 mask.png -composite round.jpg");

unlink'mask.png' );
 
?>

Changing a square picture to a round one. The picture is still square but the backgound for this image is white