Merhaba arkadaşlar. Sizler için ufak ama benim için oldukça büyük bir problemle cebelleşiyorum. Yardımcı olursanız sevinirim.

Front

<ul id="menu">    <?php foreach ($menuData as $key => $menu): ?>    <li>        <div class="menu-item">            <a href="#" class="delete-menu">                <i class="fa fa-times"></i>            </a>            <input type="text" name="title[]" value="<?=$menu['title']?>" placeholder="Menü Adı">            <input type="text" name="url[]" value="<?=$menu['url']?>" placeholder="Menü Linki">        </div>        <div class="sub-menu">            <ul>                <?php if (isset($menu['submenu'])): ?>                <?php foreach ($menu['submenu'] as $k => $submenu):?>                        <li>                            <div class="menu-item">                                <a href="#" class="delete-menu">                                    <i class="fa fa-times"></i>                                </a>                                <input type="text" name="sub_title_<?=$key?>" value="<?=$submenu['title']?>" placeholder="Menü Adı">                                <input type="text" name="sub_url_<?=$key?>" value="<?=$submenu['url']?>" placeholder="Menü Linki">                            </div>                        </li>                <?php endforeach; ?>                <?php endif; ?>            </ul>        </div>        <a href="#" class="add-submenu btn">Alt Menü Ekle</a>    </li>    <?php endforeach; ?></ul>

Back

$id = get('id');if (!$id){    header('Location:'.admin_url('menu'));    exit;}$query = $db -> prepare('SELECT * FROM menu WHERE menu_id = :id');$query->execute([    'id' => $id]);$row = $query -> fetch(PDO::FETCH_ASSOC);if (!$row){    header('Location:'.admin_url('menu'));    exit;}if (post('submit')){    $menu = [];    $menu_title = post('menu_title');    if(!$menu_title){        $error = 'Menü başlığını yazın!';    }elseif (count(array_filter(post('title'))) == 0){        $error = 'En az bir menü içeriği olmalıdır!';    }else{    $urls = post('url');    foreach (post('title') as $key => $title ){        echo $title.' - '.$urls[$key].'<br>';        $arr = [            'title' => $title,            'url' => $urls[$key]        ];        if (post('sub_title_'.$key)){            $submenu = [];            $suburls = post('sub_url_'.$key);            foreach (post('sub_title_'.$key) as $k => $subtitle) {                $submenu = [                    'title' => $subtitle,                    'url' => $suburls[$k]                ];            }            $arr['submenu'] = $submenu;        }        $menu[] = $arr;    }            $query = $db -> prepare('INSERT INTO menu SET          menu_title = :menu_title,          menu_content = :menu_content');        $result = $query -> execute([            'menu_title' => $menu_title,            'menu_content' => json_encode($menu)        ]);        if ($result){            header('Location:'.admin_url('menu'));        }else{            $error = 'Bir sorun oluştu lütfen tekrar deneyin!';        }    }}$menuData = json_decode($row['menu_content'],true);require admin_view('edit-menu');

Çıktı

<ul>
                                                                                <li>
                                    <div class="menu-item">
                                        <a href="[URL="http://localhost/cms/admin/edit-menu?id=1#"]#[/URL]" class="delete-menu">
                                            <i class="fa fa-times"></i>
                                        </a>
                                        <input type="text" name="sub_title_2" value="<br />
<b>Warning</b>:  Illegal string offset 'title' in <b>C:xampphtdocscmsadminviewedit-menu.php</b> on line <b>27</b><br />
M" placeholder="Menü Adı">
                                        <input type="text" name="sub_url_2" value="<br />
<b>Warning</b>:  Illegal string offset 'url' in <b>C:xampphtdocscmsadminviewedit-menu.php</b> on line <b>28</b><br />
M" placeholder="Menü Linki">
                                    </div>
                                </li>
                                                        <li>
                                    <div class="menu-item">
                                        <a href="[URL="http://localhost/cms/admin/edit-menu?id=1#"]#[/URL]" class="delete-menu">
                                            <i class="fa fa-times"></i>
                                        </a>
                                        <input type="text" name="sub_title_2" value="<br />
<b>Warning</b>:  Illegal string offset 'title' in <b>C:xampphtdocscmsadminviewedit-menu.php</b> on line <b>27</b><br />
/" placeholder="Menü Adı">
                                        <input type="text" name="sub_url_2" value="<br />
<b>Warning</b>:  Illegal string offset 'url' in <b>C:xampphtdocscmsadminviewedit-menu.php</b> on line <b>28</b><br />
/" placeholder="Menü Linki">
                                    </div>
                                </li>
                                                                    </ul>