imagecolortransparent() function in PHP

The imagecolortransparent() function is used to set the color of a transparent image.

Syntax

imagecolortransparent ( img, color )

Parameters

• img: Create image with imagecreatetruecolor() function.

• color: Color identifier created with imagecolorallocate().

Return

The imagecolortransparent() function returns the identifier of the new transparent color. The return value is -1 if color is not specified and the image has no transparent color.

Example

The following is an example

Output

The following is the output: