Javascript debugger
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De-allocates a color previously allocated with imagecolorallocate() or imagecolorallocatealpha().
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
The color identifier
<?php
$white = imagecolorallocate($im, 255, 255, 255);
imagecolordeallocate($im, $white);
?>