Array elements validation

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

// say you have this array
// array in request 'user_info'
$request->validated()->user_info = [
    [
        'name' => 'Qasim',
        'age' => 26,
    ],
    [
        'name' => 'Ahmed',
        'age' => 23,
    ],
];
 
// Rule
$rules = [
    'user_info.*.name' => ['required', 'alpha'],
    'user_info.*.age' => ['required', 'numeric'],
];

Tip given by HydroMoon