The imagecolortransparent() function is an inbuilt function in PHP which is used to define a color as transparent. It sets the color of a transparent image. It returns the identifier of the new transparent color. If an image has no transparent color and color not specified then it returns -1.
int imagecolortransparent ( $image, $color )
Parameters: This function accepts two parameters as mentioned above and described below:
- $image: It is returned by one of the image creation functions, such as imagecreatetruecolor(). It is used to create size of image.
- $color: This parameter is used to set the color identifier created by imagecolorallocate() function.
Return Value: This function returns the identifier of the new transparent color. If the color of an image is not specified and the image has no transparent color then it returns -1.
Below programs illustrate the imagecolortransparent() function in PHP:
This article is attributed to GeeksforGeeks.org