Overview
KB
Technical FAQ
PHP Manual
CSS2 Manual
HTML Manual
JS Guide
JS Reference
PhpDock Manual
Nu-Coder Manual
PhpExpress Manual
PHP Joomla
Development
Learn PHP
 
<imagecolorstotalimageconvolution>
Last updated: Tue, 19 Sep 2006

imagecolortransparent

(PHP 3, PHP 4, PHP 5)

imagecolortransparent -- Define a color as transparent

Description

int imagecolortransparent ( resource image [, int color] )

imagecolortransparent() sets the transparent color in the image image to color. image is the image identifier returned by imagecreatetruecolor() and color is a color identifier returned by imagecolorallocate().

Note: The transparent color is a property of the image, transparency is not a property of the color. Once you have set a color to be the transparent color, any regions of the image in that color that were drawn previously will be transparent.

The identifier of the new (or current, if none is specified) transparent color is returned.

Note: Transparency is copied only with imagecopymerge() and true color images, not with imagecopy() or pallete images.




<imagecolorstotalimageconvolution>
Last updated: Tue, 19 Sep 2006