过滤以某些字符开头的数组键

I have array:

我有阵列:

$persons = [
   'name_1' => 'asfddf',
   'name_2' => 'gsdg',
   'name_3' => '23423',
   'name_aaa' => '123sdg',
   'test' => '123sdg',
   'other' => '123sdg',
   'name_5' => 'sdg2334',
];
$persons = [
   'name_1