如何检查不在数组元素中 [英] How to check not in array element

问题描述

我想检查一个元素是否不在数组中而不是想重定向页面:我的代码如下:

I am trying to check if an element is not in array than want to redirect page: My code is as below:

$id = $access_data['Privilege']['id']; 

if(!in_array($id,$user_access_arr))
{
    $this->Session->setFlash(__('Access Denied! You are not eligible to access this.'), 'flash_custom_success');
    return $this->redirect(array('controller'=>'Dashboard','action'=>'index'));
}

我很困惑如何检查元素是否不在数组中.因为我们可以使用 PHP 的 in_array 函数检查数组中是否存在元素.我正在尝试使用 (!in_array) 来检查它，但我没有得到结果.

I am confused how to check if element is not in array. As we can check element exist or not in array using in_array function of PHP. I am trying to check it using (!in_array) but I did not got result.

推荐答案

简单

$os = array("Mac", "NT", "Irix", "Linux");
if (!in_array("BB", $os)) {
    echo "BB is not found";
}

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