警告：未初始化的字符串偏移量0
我在线路（if($subMenues[$j]['id'] == $permisosMod[$k]['id_sub_menus']){）上有此错误;

public function Setupdashboard(){
            $data['page_tag']       = "Configuración - Empresa*";
            $data['page_title']     = "Configuración - Empresa*";
            $data['page_name']      = "setupdashboard";
            $data['permisos']       = $_SESSION['permisos'];
            $data['permisosMod']    = $_SESSION['permisosMod'];
            $data['ThisModulo']     = getModulo(get_class($this));  
            $_SESSION['moduloFull'] = $this->model->selectModulo($data['ThisModulo']);
            $data['menues']         = $this->model->selectMenues($data['ThisModulo']);
            for ($i=0; $i < count($data['menues']); $i++) { 
                $subMenues = $data['menues'][$i]['subMenues'];
                for ($j=0; $j < count((array)$subMenues); $j++) {
                    $permisosMod = $data['permisosMod'];
                    for ($k=0; $k < count($permisosMod); $k++) { 
                        if($subMenues[$j]['id'] == $permisosMod[$k]['id_sub_menus']){
                            $data['menues'][$i]['subMenues'][$j]['r'] = $permisosMod[$k]['r'];
                            $data['menues'][$i]['subMenues'][$j]['w'] = $permisosMod[$k]['w'];
                            $data['menues'][$i]['subMenues'][$j]['u'] = $permisosMod[$k]['u'];
                            $data['menues'][$i]['subMenues'][$j]['d'] = $permisosMod[$k]['d'];
                        }
                    }
                }
            }
            $data['nav_bar']        = "nav_admin.php";
            $data['page_functions_js']  = "functions_dsetupsdashboard.js";
            $this->views->getView($this,"setupdashboard",$data);
        }

在这个错误之后，我有另一个结果，我说这是因为在安装php 8之前，它对我来说是正确的。
致命错误：未捕获的类型错误：Cannot access offset of type string on string in C：\xampp\htdocs\ebsoftap\Controllers\Setupdashboard.php：29堆栈跟踪：#0 C：\xampp\htdocs\ebsoftap\Libraries\Core\Load.php（12）：Setupdashboard->Setupdashboard（''）#1 C：\xampp\htdocs\ebsoftap\Index.php（33）：require_once（'C：\xampp\htdocs...'）#2