检查某物是否为数组答案

【问题标题】：Check if something is an array检查某物是否为数组
【发布时间】：2016-05-19 06:19:12
【问题描述】：

目前我有以下问题。我需要弄清楚如何检查某个东西是否是一个数组。

if(isset($_GET['koophuur']) && $_GET['koophuur'] == 'koop'){
        $this->objects->search->koop          = true;
        $this->objects->search->min_koopprijs = (isset($_GET['min_prijs']) && !empty($_GET['min_prijs'])?$_GET['min_prijs']:null);
        $this->objects->search->max_koopprijs = (isset($_GET['max_prijs']) && !empty($_GET['max_prijs'])?$_GET['max_prijs']:null);
    }elseif(isset($_GET['koophuur']) && $_GET['koophuur'] == 'huur'){
        $this->objects->search->huur          = true;
        $this->objects->search->min_huurprijs = (isset($_GET['min_prijs']) && !empty($_GET['min_prijs'])?$_GET['min_prijs']:null);
        $this->objects->search->max_huurprijs = (isset($_GET['max_prijs']) && !empty($_GET['max_prijs'])?$_GET['max_prijs']:null);
    }
    if(isset($_GET['koophuurgarage']) && $_GET['koophuurgarage'] == 'koopgarage'){
        $this->objects->search->koop          = true;
        $this->objects->search->min_koopprijs = (isset($_GET['min_prijs']) && !empty($_GET['min_prijs'])?$_GET['min_prijs']:null);
        $this->objects->search->max_koopprijs = (isset($_GET['max_prijs']) && !empty($_GET['max_prijs'])?$_GET['max_prijs']:null);
    }elseif(isset($_GET['koophuurgarage']) && $_GET['koophuurgarage'] == 'huurgarage'){
        $this->objects->search->huur          = true;
        $this->objects->search->min_huurprijs = (isset($_GET['min_prijs']) && !empty($_GET['min_prijs'])?$_GET['min_prijs']:null);
        $this->objects->search->max_huurprijs = (isset($_GET['max_prijs']) && !empty($_GET['max_prijs'])?$_GET['max_prijs']:null);
    }

我现在没有在我的搜索查询中得到这些结果。

【问题讨论】：

标签： php arrays variables

【解决方案1】：

您可以使用is_array 函数。如果数组则返回true，否则返回false。

is_array($variable);

如果你需要检查数组是否为空，那么

empty($array) ：如果为空，则返回 true。

如果需要检查是否设置了任何键，则可以使用

isset($array['key']) 或 array_key_exists('key', $array)

is_array , array_key_exists

【讨论】：

空数组也是数组