Converts a palette based image to true color
Syntax
imagepalettetotruecolor( GdImage $image ): bool
Parameters
image
A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
Return
Returns true if the convertion was complete, or if the source image already is a true color image, otherwise false is returned.
Examples
1 · return
<? $width = 100; $height = 100; $image = imagecreate($width, $height); $return = imagepalettetotruecolor($image); var_export($return); ?>
true
2 · base64
<? $width = 100; $height = 100; $image = imagecreate($width, $height); imagepalettetotruecolor($image); ob_start(); imagepng($image); $output = ob_get_clean(); echo '<!doctype html> <html> <body> <img src="data:image/png;base64,' . base64_encode($output) . '"> </body> </html>'; ?>
<!doctype html> <html> <body> <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABAElEQVR4nO3RQQ0AIBDAsAP/nuGNAvZoFSzZmpkzZOzfAbwMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEkxpAYQ2IMiTEk5gLcywHHnWLL6AAAAABJRU5ErkJggg=="> </body> </html>