Php/docs/function.imagecolorresolve
imagecolorresolve
(PHP 4, PHP 5, PHP 7)
imagecolorresolve — Get the index of the specified color or its closest possible alternative
Description
imagecolorresolve
( resource $image
, int $red
, int $green
, int $blue
) : int
This function is guaranteed to return a color index for a requested color, either the exact color or the closest possible alternative.
If you created the image from a file, only colors used in the image are resolved. Colors present only in the palette are not resolved.
Parameters
image
- An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
red
- Value of red component.
green
- Value of green component.
blue
- Value of blue component.
Return Values
Returns a color index.
Examples
Example #1 Using imagecoloresolve() to get colors from an image
<?php// Load an image$im = imagecreatefromgif('phplogo.gif');// Get closest colors from the image$colors = array();$colors[] = imagecolorresolve($im, 255, 255, 255);$colors[] = imagecolorresolve($im, 0, 0, 200);// Outputprint_r($colors);imagedestroy($im);?>
The above example will output something similar to:
Array ( [0] => 89 [1] => 85 )