如何在嵌套数组中找出

Question

我有以下数组:

Array
(
    [0] => Array
        (
            [country_id] => 1
        )

    [1] => Array
        (
            [country_id] => 2
        )

    [2] => Array
        (
            [country_id] => 3
        )

)

我想基本检查一个值是否在这个数组中.所以如果country_id = 1,那么它是真的,等等.

任何帮助都是极好的!

Answer 1

$found = false;
foreach ($your_array as $key => $element) {
   if (isset($element['country_id']) && ($element['country_id'] == 1)) {
       $found = $key;
       break;
   }
}