imagecolormatch

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

Makes the colors of the palette version of an image more closely match the true color version

bool imagecolormatch ( resource $image1, resource $image2 )

Makes the colors of the palette version of an image more closely match the true color version.

Parameters:

image1

A truecolor image link resource.

image2

A palette image link resource pointing to an image that has the same size as image1.

Returns:

Returns TRUE on success or FALSE on failure.

Notes:

This function requires GD 2.0.1 or later (2.0.28 or later is recommended).

Examples:

imagecolormatch() example

<?php
// Setup the true color and palette images
$im1 = imagecreatefrompng('./gdlogo.png');
$im2 = imagecreate(imagesx($im1), imagesy($im1));

// Add some colors to $im2
$colors   = Array();
$colors[] = imagecolorallocate($im2, 255, 36, 74);
$colors[] = imagecolorallocate($im2, 40, 0, 240);
$colors[] = imagecolorallocate($im2, 82, 100, 255);
$colors[] = imagecolorallocate($im2, 84, 63, 44);

// Match these colors with the true color image
imagecolormatch($im1, $im2);

// Free from memory
imagedestroy($im1);
imagedestroy($im2);
?>