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copied!<pre><code><?php function array_between_duplicates($ary) { // first, tally up all the values // we need to know how many times each value repeats $count = array_count_values($ary); // next, we want only the values that are not repeated. // This can be done by filtering the array for values // present 2+ times $between = array_filter($count, create_function('$a','return $a==1;')); // now that we have the unique values, swap the keys // and value locations using array_keys $swap = array_keys($between); // and then intersect the new array with the original // array so we can get back their original key values. $intersect = array_intersect($ary, $swap); var_dump($intersect); // now, in order to get the nested groups we will use // skipped keys as a sign that the in-between values // were repeats. So, iterate over the array and break // out these groups $result = array(); $group = array(); foreach ($ary as $key => $value) { if (!array_key_exists($key, $intersect) && count($group) > 0) { $result[] = $group; $group = array(); } if (array_search($value,$intersect) !== false) $group[] = $value; } if (count($group) > 0) $result[] = $group; // return the result return $result; } var_dump(array_between_duplicates($Produtos)); </code></pre> <p>Results in:</p> <pre><code>array(3) { [0]=> array(2) { [0]=> string(5) "Piano" [1]=> string(5) "Baixo" } [1]=> array(2) { [0]=> string(7) "Violão" [1]=> string(13) "Caixas de Som" } [2]=> array(1) { [0]=> string(7) "Sanfona" } } </code></pre> <p><strong><a href="http://www.ideone.com/MQEZH" rel="nofollow">DEMO</a></strong></p>

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