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如何显示选择多个下拉从使用数组在php

How to display select multiple drop down from using array in php?

本文关键字：数组 php 何显示 显示 选择 | 更新日期: 2023-09-27

我想下拉像父，子意味着多层任务使用bootstrap CSS。我尝试了下面的一个，但我得到了所有课程的名称在孩子。我想要下拉菜单，比如

Linux——Linux基础

CSS——CSS基本

下面是我的代码: 
<ul class="sub-menu" style="border-right: 2px solid #012340;">
    <?php foreach($outContentArrResults AS $courseName=> $valArrMenu){ ?>
        <li class="menu-item-has-children">
          <a href="#"><?php echo isset($valArrMenu[0]) ? $valArrMenu[0]:'';?  ></a>
            <ul class="sub-menu" style="border-right: 2px solid #012340;border-left: 2px solid #012340;">
            <?php for($i=0; $i<count($valArrMenu['slug']); $i++){?>
                <li>
                   <a href="<?php echo $config['LIVE_URL'];?>courses/<?php isset($valArrMenu['slug'][$i]) ? $valArrMenu['slug'][$i]:'';?>"><?php echo isset($valArrMenu[$i]) ? $valArrMenu[$i]:'';?></a>
                </li>
            <?php } ?>
            </ul>
        </li>
    <?php } ?>
    </ul>

下面是我的数组值:

         Array
      (
              [mainCourse] => Array
      (
        [0] => linux
        [slug] => Array
             (  
                [0] => linux
                [1] => linux-basics
                [2] => first-steps
                [3] => last
                [4] => sdd
                [5] => css
                [6] => css-basics
                [7] => css-introduction
                [8] => linux-sub
                [9] => test-sub-sub-linux
            )
        [1] => linux Basics
        [2] => first steps
        [3] => last
        [4] => sdd
        [5] => css
        [6] => css Basics
        [7] => css Introduction
        [8] => linux sub
        [9] => test sub sub linux
    )
)
$arrCourses = $this->objWsCoursesModel->getMainMenuCourses();
        //print_r($arrCourses);
        $outResults = array();
        for($i=0; $i<count($arrCourses); $i++){
            $courseName = isset($arrCourses[$i]['course_name']) ? $arrCourses[$i]['course_name'] : '';
            $outResults['mainCourse'][] = $courseName;
            $outResults['mainCourse']['slug'][] = isset($arrCourses[$i]['course_slug_name']) ? $arrCourses[$i]['course_slug_name'] : '';
        }

你正在制作一个非常复杂的数组，这将很难实现;)

试试这个数组:

$arrCourses = $this->objWsCoursesModel->getMainMenuCourses();
$outResults = array();
for($i=0; $i<count($arrCourses); $i++){
    $courseName = isset($arrCourses[$i]['course_name']) ?    $arrCourses[$i]['course_name'] : '';
    $outResults['mainCourse'][$courseName][] = isset($arrCourses[$i]['course_slug_name']) ? $arrCourses[$i]['course_slug_name'] : '';;
}

试试这段代码。这是一段粗略的代码。我不确定是否有语法错误，但我认为它会像这样工作:

<ul>
<?php foreach($outContentArrResults AS $courseName=> $valArrMenu){ ?>
<li class="menu-item-has-children">
    <a href="#"><?php echo $courseName ?></a>
    <ul class="sub-menu" style="border-right: 2px solid #012340;border-left: 2px solid #012340;">
        <?php for($valArrMenu as $row){?>
        <li>
            <a href="<?php echo $config['LIVE_URL'];?>courses/<?php isset($valArrMenu['slug'][$i]) ? $valArrMenu['slug'][$i]:'';?>"><?php echo isset($valArrMenu[$i]) ? $valArrMenu[$i]:'';?></a>
        </li>
        <?php } ?>
    </ul>
</li>
<?php } ?>
</ul>

您可以这样尝试，它以Array格式返回值。我在Item category Tree

中使用了这个函数
   function categoryDropDown($categoryArray, $parentId, $level, $options)
{
    $level++;
    foreach ($categoryArray  as  $array)
    {
        if($array['parentId'] == $parentId)
        {
            $opt = $array['name'] ;
            $categoryLevel = $level -1;
            $options[$array['id']] =  array("id"=> $array['id'], "categoryName"=>"$opt","level" => "$categoryLevel", "status" => $array['status']);
            $newParent = $array['id'];
            $options = categoryDropDown($categoryArray, $newParent, $level , $options);
        }
    }
    return $options;
}

——输出

    $options= categoryDropDown();      //now it will converted into an Array.

所以你可以像这样打印选项

  <?php
    foreach($options as $value)
    {
    ?>
    <option value="<?php echo $value['id']; ?>"> <?echo $value['categoryName']; ?> </option>
    //Which is similar to <option value="option name/id">Option 1</option>
    <?php
    }
    ?>

数组输出如下所示(这里index是来自我的数据库的主键)

Array
(
    [1] => Array
        (
            [id] => 1
            [categoryName] => Electronics
            [level] => 0
            [status] => d
        )
    [3] => Array
        (
            [id] => 3
            [categoryName] => Laptops
            [level] => 1
            [status] => a
        )
    [6] => Array
        (
            [id] => 6
            [categoryName] => Laptop Accessories
            [level] => 2
            [status] => a
        )
    [2] => Array
        (
            [id] => 2
            [categoryName] => Mobile
            [level] => 1
            [status] => a
        )
    [5] => Array
        (
            [id] => 5
            [categoryName] => Mobile Accessories
            [level] => 2
            [status] => d
        )
    [4] => Array
        (
            [id] => 4
            [categoryName] => Tablet
            [level] => 1
            [status] => a
        )
    [12] => Array
        (
            [id] => 12
            [categoryName] => Fashion
            [level] => 0
            [status] => a
        )
    [13] => Array
        (
            [id] => 13
            [categoryName] => Men
            [level] => 1
            [status] => a
        )
    [15] => Array
        (
            [id] => 15
            [categoryName] => Jeans
            [level] => 2
            [status] => a
        )
    [14] => Array
        (
            [id] => 14
            [categoryName] => Women
            [level] => 1
            [status] => a
        )
    [16] => Array
        (
            [id] => 16
            [categoryName] => Jeans
            [level] => 2
            [status] => a
        )
    [11] => Array
        (
            [id] => 11
            [categoryName] => Main Category 2
            [level] => 0
            [status] => a
        )
    [33] => Array
        (
            [id] => 33
            [categoryName] => temp
            [level] => 0
            [status] => a
        )
)

你也可以参考PHP/MySQL中的简单递归树

是的，munjal的解决方案是正确的。你也在制作非常复杂的数组结构。如果你擅长jquery和json解析，在页面加载调用js函数，你创建json数组的菜单树。

这是我对问题的编辑，不确定我是否正确解释了问题:

$config['LIVE_URL'] = 'https://example.com/'
$arr_courses = $this->objWsCoursesModel->getMainMenuCourses();
$menu_data = [];
for ($i = 0; $i < count($arr_courses); $i++)
{
    $course_name = isset($arr_courses[$i]['course_name']) ? $arr_courses[$i]['course_name'] : '';
    $menu_data['mainCourse'][$course_name]['title'][$i] = $course_name;
    $menu_data['mainCourse'][$course_name]['slug'][$i] = isset($arr_courses[$i]['course_slug_name']) ? $arr_courses[$i]['course_slug_name'] : '';
}
// $menu_data should look something like this
$menu_data = [
    'linux' => [
        'title' => [
            'linux Basics',
            'first steps',
            'last',
            'sdd',
            'linux sub',
            'test sub sub linux',
        ],
        'slug' => [
            'linux-basics',
            'first-steps',
            'last',
            'sdd',
            'linux-sub',
            'test-sub-sub-linux',
        ],
    ],
    'css' => [
        'title' => [
            'css',
            'css Basics',
            'css Introduction',
        ],
        'slug' => [
            'css',
            'css-basics',
            'css-introduction',
        ],
    ]
];
?>
<ul class="sub-menu">
    <?php foreach($menu_data as $course_name => $data): ?>
        <li class="menu-item-has-children">
            <a href="#"><?php echo $course_name; ?></a>
            <ul class="sub-menu">                
                <?php for ($i = 0; $i < count($data['slug']); $i++): ?>
                    <li>
                        <a href="<?php echo $config['LIVE_URL'];?>courses/<?php echo isset($data['slug'][$i]) ? $data['slug'][$i]:'';?>"><?php echo isset($data['title'][$i]) ? $data['title'][$i]:'';?></a>
                    </li>
                <?php endfor; ?>
            </ul>
        </li>
    <?php endforeach; ?>
</ul>
输出:

linux                          (href="#")
    linux Basics               (href=https://example.com/courses/linux-basics)
    first steps                (...)
    last
    sdd
    linux sub
    test sub sub linux
css                            (href ="#")
    css                        (href=https://example.com/courses/css)
    css Basics                 (...)
    css Introduction

从这里你可以添加css样式，这应该不是太大的问题。

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