hainan/app/Models/AdminSetting.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class AdminSetting extends Model
{
    use HasFactory;

    public static function val($slug)
	{
		if (is_array($slug)) {
			return static::query()->whereIn('slug', $slug)->pluck('value')->toArray() ?? [];
		} else {
			return static::query()->where('slug', $slug)->value('value') ?? null;
		}
	}
}