无极分类后foreach实现多级菜单

[cjqcy416]

1.得到一个已无极分类的二维数组

<?php
$lists = array(
    '0' => array('m_id' => 12, 'm_name' => '一级分公司标准成本', 'm_parent_id' => 11, 'm_sort' => 50, 'level' => 0),
    '1' => array('m_id' => 13, 'm_name' => '机台费用', 'm_parent_id' => 12, 'm_sort' => 50, 'level' => 1),
    '2' => array('m_id' => 144, 'm_name' => '机台费用分析', 'm_parent_id' => 13, 'm_sort' => 50, 'level' => 2),
    '3' => array('m_id' => 14, 'm_name' => '原材料价格管理', 'm_parent_id' => 11, 'm_sort' => 50, 'level' => 0),
    '4' => array('m_id' => 15, 'm_name' => '原材料价格表', 'm_parent_id' => 14, 'm_sort' => 50, 'level' => 1),
    '5' => array('m_id' => 143, 'm_name' => '原材料价格分析1', 'm_parent_id' => 15, 'm_sort' => 50, 'level' => 2),
    '6' => array('m_id' => 148, 'm_name' => '原材料价格分析2', 'm_parent_id' => 15, 'm_sort' => 50, 'level' => 2)
);
?>

2.想要在html用foreach实现多级菜单的效果

<ul>
            <li>0一级分公司标准成本
            
                <ul>
                    <li>1机台费用
                    
                        <ul>
                            <li>2机台费用分析</li>
                        </ul>
                    </li>
                </ul>
            </li>
            <li>0原材料价格管理
                <ul>
                    <li>1原材料价格表
                        <ul>
                            <li>2原材料价格分析1</li>
                            <li>2原材料价格分析2</li>
                        </ul>
                    </li>
                </ul>
            </li>
        </ul>

3.我的实现方式，总是实现不了，请大神帮忙指点错在哪里，谢谢！

<ul>
            <?php foreach ($lists as $list): ?>
                <?php if ($list['level'] == 0) { ?>
                    <li><?php echo '0', $list['m_name']; ?>
                    <?php } else if ($list['level'] == 1) { ?>
                        <ul>
                            <li><?php echo '1', $list['m_name']; ?>
                        </ul>
                    </li>
                    <li>
                        <ul>
                        <?php } else { ?>
                            <li><?php echo '2', $list['m_name']; ?></li>
                        </ul>
                    </li>           
                <?php } ?>
            <?php endforeach; ?>
        </ul>

[yeyiop]

可以用递归函数

[傲雪星枫]

<?php
$lists = array(
    '0' => array('m_id' => 12, 'm_name' => '一级分公司标准成本', 'm_parent_id' => 11, 'm_sort' => 50, 'level' => 0),
    '1' => array('m_id' => 13, 'm_name' => '机台费用', 'm_parent_id' => 12, 'm_sort' => 50, 'level' => 1),
    '2' => array('m_id' => 144, 'm_name' => '机台费用分析', 'm_parent_id' => 13, 'm_sort' => 50, 'level' => 2),
    '3' => array('m_id' => 14, 'm_name' => '原材料价格管理', 'm_parent_id' => 11, 'm_sort' => 50, 'level' => 0),
    '4' => array('m_id' => 15, 'm_name' => '原材料价格表', 'm_parent_id' => 14, 'm_sort' => 50, 'level' => 1),
    '5' => array('m_id' => 143, 'm_name' => '原材料价格分析1', 'm_parent_id' => 15, 'm_sort' => 50, 'level' => 2),
    '6' => array('m_id' => 148, 'm_name' => '原材料价格分析2', 'm_parent_id' => 15, 'm_sort' => 50, 'level' => 2)
);
?>

<ul>
            <?php foreach ($lists as $list): ?>
                <?php if($list['level']==0){ ?>
                    <li><?php echo '0', $list['m_name']; ?></li>
                <?php } ?>
                <?php if($list['level']==1){ ?>
                    <li style="list-style:none"><ul><li><?php echo '1', $list['m_name']; ?></li></ul></li>
                <?php } ?>
                <?php if($list['level']==2){ ?>
                    <li style="list-style:none"><ul><li style="list-style:none"><ul><li><?php echo '2', $list['m_name']; ?></li></ul></li></ul></li>
                <?php } ?>
            <?php endforeach; ?>
        </ul>

[cjqcy416]

引用 1 楼 傲雪星枫的回复:

<?php
$lists = array(
    '0' => array('m_id' => 12, 'm_name' => '一级分公司标准成本', 'm_parent_id' => 11, 'm_sort' => 50, 'level' => 0),
    '1' => array('m_id' => 13, 'm_name' => '机台费用', 'm_parent_id' => 12, 'm_sort' => 50, 'level' => 1),
    '2' => array('m_id' => 144, 'm_name' => '机台费用分析', 'm_parent_id' => 13, 'm_sort' => 50, 'level' => 2),
    '3' => array('m_id' => 14, 'm_name' => '原材料价格管理', 'm_parent_id' => 11, 'm_sort' => 50, 'level' => 0),
    '4' => array('m_id' => 15, 'm_name' => '原材料价格表', 'm_parent_id' => 14, 'm_sort' => 50, 'level' => 1),
    '5' => array('m_id' => 143, 'm_name' => '原材料价格分析1', 'm_parent_id' => 15, 'm_sort' => 50, 'level' => 2),
    '6' => array('m_id' => 148, 'm_name' => '原材料价格分析2', 'm_parent_id' => 15, 'm_sort' => 50, 'level' => 2)
);
?>

<ul>
            <?php foreach ($lists as $list): ?>
                <?php if($list['level']==0){ ?>
                    <li><?php echo '0', $list['m_name']; ?></li>
                <?php } ?>
                <?php if($list['level']==1){ ?>
                    <li style="list-style:none"><ul><li><?php echo '1', $list['m_name']; ?></li></ul></li>
                <?php } ?>
                <?php if($list['level']==2){ ?>
                    <li style="list-style:none"><ul><li style="list-style:none"><ul><li><?php echo '2', $list['m_name']; ?></li></ul></li></ul></li>
                <?php } ?>
            <?php endforeach; ?>
        </ul>

可以得到效果，但没有我html里那样的结构

[cjqcy416]

不知道怎么用啊

[qq_34921650]

恩 两个代码段你看下，不懂的留言！
一级、二级分类


三级分类