$this->input->post in ci4

Hi everyone,

I have a problem in ci4
i don't know how to get array in ci4

Code:

<input class="priority" type="text" name="priority[]" value="a">
<input class="priority" type="text" name="priority[]" value="b">
<input class="priority" type="text" name="priority[]" value="c">

i want to get array of value like : $priority = array([0] =>"a", [1] => "b", [2] = "c");

Please help me