mikecao

function md5(str) {
    var i, j,
        bytes = [],
        words = [],
        hex = [];

    var Y = [7, 12, 17, 22, 5, 9, 14, 20, 4, 11, 16, 23, 6, 10, 15, 21];

    var Z = [0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
        0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,

bobmagicii

<?php

function bob_opacity($img,$alpha) {
	if(!is_object($img)) return false;
	if($alpha > 1 || $alpha < 0) return false;

	$rows = $img->getPixelIterator();
	foreach($rows as $cols) {
		foreach($cols as $pixel) {
			// we now have an object pointing at a single pixel of the image