The imagecolorat() function gets the index of the color of the pixel.
Syntax
Parameters
img
: Create an image with imagecreatetruecolor() function.
x
: The x-coordinate of the point.
y:
The y-coordinate of the point.
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Return
The imagecolorat() function returns the color index or FALSE on failure.
Example
The following is an example:
Live Demo
输出
以下是输出结果：
imagecolorat( $img, $x, $y )array(4) { ["red"]=> int(255) ["green"]=> int(255) ["blue"]=> int(255) ["alpha"]=> int(127) }