(PHP 4, PHP 5, PHP 7)
imagecolordeallocate — De-allocate a color for an image
$image
, int $color
)De-allocates a color previously allocated with imagecolorallocate() or imagecolorallocatealpha().
imageAn image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
colorThe color identifier.
Returns TRUE on success or FALSE on failure.
Example #1 Using imagecolordeallocate()
<?php
$white = imagecolorallocate($im, 255, 255, 255);
imagecolordeallocate($im, $white);
?>