$mylist = array(array( 'parent_id'=>0,'id'=>1), array( 'parent_id'=>0,'id'=>2), array( 'parent_id'=>0,'id'=>3), array( 'parent_id'=>2,'id'=>4), array( 'parent_id'=>2,'id'=>5), array( 'parent_id'=>3,'id'=>6), array( 'parent_id'=>3,'id'=>7), array( 'parent_id'=>4,'id'=>8), array( 'parent_id'=>5,'id'=>9), array( 'parent_id'=>5,'id'=>10) ); function _findChildren($list, $p_id){ //数据层级化, $r = array(); foreach($list as $id=>$item){ if($item['parent_id'] == $p_id) { $length = count($r); $r[$length] = $item; if($t = $this->_findChildren($list, $item['id']) ){ $r[$length]['children'] = $t; } } } return $r; } print_r(_findChildren($mylist, 0));
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