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imagecolortransparent (PHP 4, PHP 5, PHP 7, PHP 8) 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 imagecreate () and color is a color identifier returned by imagecolorallocate ().
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor ().
ImageColorTransparent sets the transparent color in the im image to col. im is the image identifier returned by imagecreate () and col is a color identifier returned by imagecolorallocate ().
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.
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 ().
imagecolortransparent — Define a color as transparent imageconvolution — Apply a 3x3 convolution matrix, using coefficient and offset imagecopy — Copy part of an image imagecopymerge — Copy and merge part of an image imagecopymergegray — Copy and merge part of an image with gray scale
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