php循环的一个有关问题

php循环的一个问题
有这样一个数组 

PHP code

Array(    [0] => Array        (            [id] => 1            [name] => ~core            [title] => 项目            [_child] => Array                (                    [0] => Array                        (                            [id] => 2                            [name] => home                            [title] => 主页分组                            [_child] => Array                                (                                    [0] => Array                                        (                                            [id] => 3                                            [name] => index                                            [title] => 首页模块                                            [_child] => Array                                                (                                                    [0] => Array                                                        (                                                            [id] => 5                                                            [name] => index                                                            [title] => 项目首页                                                        )                                                )                                        )                                    [1] => Array                                        (                                            [id] => 4                                            [name] => user                                            [title] => 用户模块                                            [_child] => Array                                                (                                                    [0] => Array                                                        (                                                            [id] => 6                                                            [name] => index                                                            [title] => 用户首页                                                        )                                                    [1] => Array                                                        (                                                            [id] => 7                                                            [name] => login                                                            [title] => 登陆首页                                                        )                                                    [2] => Array                                                        (                                                            [id] => 8                                                            [name] => logout                                                            [title] => 登出                                                        )                                                )                                        )                                )                        )                    [1] => Array                        (                            [id] => 9                            [name] => company                            [title] => 公司分组                            [_child] => Array                                (                                    [0] => Array                                        (                                            [id] => 11                                            [name] => index                                            [title] => 公司模块                                            [_child] => Array                                                (                                                    [0] => Array                                                        (                                                            [id] => 12                                                            [name] => pub                                                            [title] => 测试                                                        )                                                )                                        )                                )                        )                    [2] => Array                        (                            [id] => 10                            [name] => user                            [title] => 用户分组                            [_child] => Array                                (                                    [0] => Array                                        (                                            [id] => 13                                            [name] => client                                            [title] => 业务管理                                            [_child] => Array                                                (                                                    [0] => Array                                                        (                                                            [id] => 16                                                            [name] => index                                                            [title] => 业务增加页                                                        )                                                )                                        )                                    [1] => Array                                        (                                            [id] => 14                                            [name] => knowledge                                            [title] => 文章首页                                            [_child] => Array                                                (                                                    [0] => Array                                                        (                                                            [id] => 15                                                            [name] => pub                                                            [title] => 文章发布                                                        )                                                )                                        )                                )                        )                )        )) 
 

PHP code

function foo($ar) {  echo '<ul>';  foreach($ar as $v) {    echo "<li>$v[id] $v[name] $v[title] ";    if(isset($v['_child'])) foo($v['_child']);    echo '</li>';  }  echo '</ul>';}//设你的数组名为 $array，则foo($array);
[解决办法]
循环的时候判断遍历出来的是否还是数组，如果是则继续遍历
[解决办法]
探讨


PHP code
function foo($ar) {
  echo '<ul>';
  foreach($ar as $v) {
    echo "<li>$v[id] $v[name] $v[title] ";
    if(isset($v['_child'])) foo($v['_child']);
    echo '</li>';
  }
  echo '</ul>';
}

……

[解决办法]
慢慢研究，总会出来滴
[解决办法]
探讨


很简单啊，最外面的循环1次，第二个循环2次，第三个、第四个。。。循环3次就够了啊，for循环条件控制就到位了

[解决办法]
这个用递归是最好的方法.用while也可以,用递归取出数据,把每个图示中的循环放在一个数组里.
这样就有三个数组了吧
循环输出数组

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