imagecolorresolve
(PHP 4, PHP 5, PHP 7)
imagecolorresolve — Get the index of the specified color or its closest possible alternative
Description
int imagecolorresolve ( resource $image , int $red , int $green , int $blue )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);
// Output
print_r($colors);
imagedestroy($im);
?>The above example will output something similar to:
Array
(
[0] => 89
[1] => 85
)See Also
- imagecolorclosest() - Get the index of the closest color to the specified color
← imagecolormatch
imagecolorresolvealpha →
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