Laravel validation rules are not applying properly - php

Question

I'm trying to apply these validation rules to my controller function, but any of the rules are not applying
Here is my code
if($request->hasFile('propic'))
{
$this->validate($request, [
'name' => 'required', 'alpha','min:2', 'max:255',
'last_name' => 'required', 'alpha','min:5', 'max:255',
'mobile' => 'required', 'string','min:10','max:14', 'regex:/\+(9[976]\d|8[987530]\d|6[987]\d|5[90]\d|42\d|3[875]\d|
2[98654321]\d|9[8543210]|8[6421]|6[6543210]|5[87654321]|
4[987654310]|3[9643210]|2[70]|7|1)\d{1,14}$/',
'email' => 'required', 'string', 'email', 'max:255', 'unique:users,email,'.$setting->id.'',
'propic' => 'required','image','mimes:jpeg,png,jpg,gif,svg','max:2048',
]);
$imageName = time().'.'.$request->propic->extension();
$request->propic->move(public_path('propics'), $imageName);
$setting->propic=$imageName;
$setting->name=$request->input('name');
$setting->last_name=$request->input('last_name');
$setting->mobile=$request->input('mobile');
$setting->email=$request->input('email');
$setting->update();
return Redirect::back()->with('success',__('sentence.User updated successfully'));
}

Answer 1

At time of writing, there's two accepted formats for passing in validation rules:
As an array of strings (note the square brackets, which is what you are missing currently):
$this->validate($request, [
'name' => ['required', 'alpha','min:2', 'max:255'],
...
]);
As a single pipe-delimited string:
$this->validate($request, [
'name' => 'required|alpha|min:2|max:255',
...
]);