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<?php $arr = array(); $arr[] = array('p' => 3, 'id' => 4); $arr[] = array('p' => 3, 'id' => 5); $arr[] = array('p' => 3, 'id' => 6); $arr[] = array('p' => 2, 'id' => 3); $arr[] = array('p' => 1, 'id' => 2); $arr[] = array('p' => 1, 'id' => 7); $arr[] = array('p' => 0, 'id' => 1); $mas = array(); foreach($arr as $ind => $itm) { if($itm['p'] == 0) continue; if(isset($mas[$itm['id']])) { $mas[$itm['p']][$itm['id']]['elements'] = $mas[$itm['id']]; unset($mas[$itm['id']]); } $mas[$itm['p']][$itm['id']]['name'] = 'aaa'.$ind; } print_r($mas);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [1] => Array ( [2] => Array ( [elements] => Array ( [3] => Array ( [elements] => Array ( [4] => Array ( [name] => aaa0 ) [5] => Array ( [name] => aaa1 ) [6] => Array ( [name] => aaa2 ) ) [name] => aaa3 ) ) [name] => aaa4 ) [7] => Array ( [name] => aaa5 ) ) )

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