imagecolordeallocate

(PHP 4, PHP 5, PHP 7)

imagecolordeallocate — ȡ��ͼ����ɫ�ķ���

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imagecolordeallocate ( resource $image , int $color ) : bool

imagecolordeallocate() ����ȡ����ǰ�� imagecolorallocate() �� imagecolorallocatealpha() �������ɫ��

<?php
$white = imagecolorallocate($im, 255, 255, 255);
imagecolordeallocate($im, $white);
?>

�μ� imagecolorallocate() �� imagecolorallocatealpha()��