Question

我想遍历所有设置类别，并根据结果设置变量。所以这样我就可以将更新的数组/对象传递给视图并循环遍历它。但是我收到了这个错误：

Fatal error: An iterator cannot be used with foreach by reference in  /app/controllers/SettingsController.php on line 9

我的代码：

<?php
class SettingsController extends ControllerBase
{
    public function indexAction()
    {
        $this->tag->prependTitle("settings");
        $settingCategories = SettingCategory::find();
        $this->view->setVar("settingCategories",$settingCategories);
        foreach($settingCategories as &$settingCaterogy){
            if($settingCaterogy->type == "2"){
                $settingCategory->intersection = "deze mag niet";
            }else{
                $settingCategory->intersection = "deze mag";
            }
        }
        $this->view->disable();
        var_dump($settingCategories);
    }
}

当我删除＆amp;时，键未定义或编辑

Answer 1

删除＆amp;来自你的循环迭代器：

foreach($settingCategories as &$settingCaterogy){

到

foreach($settingCategories as $settingCaterogy){

Answer 2

我假设你的设置类别是一个对象，这意味着它总是作为参考传递。在这种情况下，您不需要使用＆amp;在你的每个陈述中，你也不能，因为你已经发现了。

foreach($settingCategories as $settingCaterogy){
    // …
}

Answer 3

Bytchek和Teknotica提供的答案是正确的，可以帮助您解决错误。但是，据我所知，phalcon结果集对象是只读的，因此您设置的值不会成功。解决方法是将$ settingCategories对象转换为常规数组，然后循环（通过引用：

$rw = $settingCategories->toArray();
foreach($rw as &$settingCategory){
    if($settingCaterogy["type"] == "2"){
        $settingCategory["intersection"] = "deze mag niet";
    } else {
        $settingCategory->["intersection"] = "deze mag";
    }
}

phalcon - 循环结果并更改值

3 个答案: