(PHP 4, PHP 5)
imagecolorresolve — Get the index of the specified color or its closest possible alternative
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.
Ресурс изображения, полученный одной из функций создания изображений, например, такой как imagecreatetruecolor().
Value of red component.
Value of green component.
Value of blue component.
Returns a color index.
Пример #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);
// Output
print_r($colors);
imagedestroy($im);
?>
Результатом выполнения данного примера будет что-то подобное:
Array ( [0] => 89 [1] => 85 )