note 103065 deleted from function.shuffle by danbrown

From: Date: Wed, 23 Mar 2011 15:10:10 +0000
Subject: note 103065 deleted from function.shuffle by danbrown
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Note Submitter: tim at leethost dot com ---- Update to Rick's seoShuffle but enhanced in two ways. First, it *guarantees* shuffled yet consistent order which further benefits SEO purposes (Rick's function would sometimes yield an identical result order, which defeats the purpose). Secondly, it no longer requires an additional value to be passed to set the random seed (uses the first value in the array as the seed if not specified). The function has the same purpose as the original. To shuffle the array, but to do it identically each time it's shuffled. function seoShuffle(&$items, $seed=false) { $original = md5(serialize($items)); mt_srand(crc32(($seed) ? $seed : $items[0])); for ($i = count($items) - 1; $i > 0; $i--){ $j = @mt_rand(0, $i); list($items[$i], $items[$j]) = array($items[$j], $items[$i]); } if ($original == md5(serialize($items))) { list($items[count($items) - 1], $items[0]) = array($items[0], $items[count($items) - 1]); } }

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