简洁才是王道....
- function genTree($items,$id='id',$pid='pid',$son = 'children'){
- $tree = array(); //格式化的树
- $tmpMap = array(); //临时扁平数据
-
- foreach ($items as $item) {
- $tmpMap[$item[$id]] = $item;
- }
-
- foreach ($items as $item) {
- if (isset($tmpMap[$item[$pid]])) {
- $tmpMap[$item[$pid]][$son][] = &$tmpMap[$item[$id]];
- } else {
- $tree[] = &$tmpMap[$item[$id]];
- }
- }
- unset($tmpMap);
- return $tree;
- }
-
- $items1 = array(
- array('id' => 1, 'pid' => 0, 'name' => '一级11' ),
- array('id' => 11, 'pid' => 0, 'name' => '一级12' ),
- array('id' => 2, 'pid' => 1, 'name' => '二级21' ),
- array('id' => 10, 'pid' => 11, 'name' => '二级22' ),
- array('id' => 3, 'pid' => 1, 'name' => '二级23' ),
- array('id' => 12, 'pid' => 11, 'name' => '二级24' ),
- array('id' => 9, 'pid' => 1, 'name' => '二级25' ),
- array('id' => 14, 'pid' => 1, 'name' => '二级26' ),
- array('id' => 4, 'pid' => 9, 'name' => '三级31' ),
- array('id' => 6, 'pid' => 9, 'name' => '三级32' ),
- array('id' => 7, 'pid' => 4, 'name' => '四级41' ),
- array('id' => 8, 'pid' => 4, 'name' => '四级42' ),
- array('id' => 5, 'pid' => 4, 'name' => '四级43' ),
- array('id' => 13, 'pid' => 4, 'name' => '四级44' ),
- array('id' => 15, 'pid' => 8, 'name' => '五级51' ),
- array('id' => 16, 'pid' => 8, 'name' => '五级52' ),
- array('id' => 17, 'pid' => 8, 'name' => '五级53' ),
- array('id' => 18, 'pid' => 16, 'name' => '六级64' ),
- );
- var_dump(genTree($items1));
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