Array elements validation

If you want to validate elements of an array that you submited use dot notation in rules with '*'

 1// say you have this array
 2// array in request 'user_info'
 3$request->validated()->user_info = [
 4    [
 5        'name' => 'Qasim',
 6        'age' => 26,
 7    ],
 8    [
 9        'name' => 'Ahmed',
10        'age' => 23,
11    ],
12];
13 
14// Rule
15$rules = [
16    'user_info.*.name' => ['required', 'alpha'],
17    'user_info.*.age' => ['required', 'numeric'],
18];

Tip given by HydroMoon