如何使用foreach获取嵌套数组的键值？

Question

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我的代码如下：

foreach ($tmpArray as $keys => $values) {
        if(is_array($values)) {
            foreach ($values as $key => $value) {
                if($key == "category_name"){
                    echo $value['category_name'];
                }
            }
        } else {
            if($keys == "category_name"){
                echo $values;
            }
        }
    }

输出：Vasıta-＆gt; Bmw X Serisi 我想这样做：Vasıta-＆gt; Bmw X Serisi-＆gt; Deneme

如何使用foreach循环打印category_name？

Answer 1

if (is_array($tmpArray)) {
echo isset($tmpArray['category_name']) ? $tmpArray['category_name'] . '->' : '';
foreach ($tmpArray as $key1 => $value1) {
    if (is_array($value1)) {
        echo isset($value1['category_name']) ? $value1['category_name'] . '->' : '';
        foreach ($value1 as $key2 => $value2) {
            if (is_array($value2)) {
                echo isset($value2['category_name']) ? $value2['category_name'] : '';
            }
        }
    }
}
}