php - PNG file is NOT keeping transparency? -


i'll using these variables throughout: 

$rootdir = $_server["document_root"]; $rootfile = "http://www.scottandjessiecooper.com/webtutorials/images/smiley.png"; $newfile = "$rootdir/images/tmp/new_smiley.png";

when use function, have no problems transparency 

function save_image($root, $saveto){     copy($root, $saveto); } save_image( $rootfile, $newfile ); // root can file or url

however need use image_resource cam manipulate rootfile if needed

so treid this:

if ( file_exists( $newfile ) ) unlink ($newfile); $image = imagecreatefrompng( $rootfile ); imagepng( $image, $newfile ); imagedestroy( $image );

now when use this:

<img src="<?=$newfile?>" />

i lose transparency. background goes black!

so tried outputting image make sure wasn't saving caused problem:

if ( file_exists( $newfile ) ) unlink ($newfile); $image = imagecreatefrompng( $rootfile ); header('content-type: image/png'); imagepng( $image ); imagedestroy( $image );

still no avail...

help?

you need enabled alpha blending , save alpha. found after 10 sec google search: http://www.php.net/manual/en/function.imagecreatefrompng.php#43024


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