How to get server key for FCM notification

Click the settings icon next to your project name at the top left of the new Firebase Console
Click Project settings
Click on the Cloud Messaging tab
The key is right under Server Key
If your key is not correct it will return Error 401.

Please refer attached Image



how Use Laravel Auth middleware


If you want set any middleware in larave you need to change kernel.php file which is located in app/http folder
In Kernel.php – you can set middleware like this:

* The application’s route middleware.
* @var array
protected $routeMiddleware = [
‘auth’ => ‘App\Http\Middleware\Authenticate’,
‘auth.basic’ => ‘Illuminate\Auth\Middleware\AuthenticateWithBasicAuth’,
‘guest’ => ‘App\Http\Middleware\RedirectIfAuthenticated’,

‘admin’ => \App\Http\Middleware\Admin::class,
‘guestadmin’ => ‘App\Http\Middleware\RedirectIfAuthenticated’,

If you want to create Admin middleware you need to create Admin.php in middleware folder which in located in app folder.
Create admin and copy code below:-
return redirect()->route(‘admin.login’);

return $next($request);


Define ROutes in route file
| Application Routes for BackEnd
Route::group([‘namespace’ => ‘BackEnd’, ‘prefix’ => ‘admin’], function() {
#Access only guest users
Route::group([‘middleware’ => [‘adminguest’]], function(){
Route::get(‘/login’, [
‘as’ => ‘admin.login’,
‘uses’ => ‘AdminController@getSignin’
Route::post(‘/login’, [
‘as’ => ‘admin.login’,
‘uses’ => ‘AdminController@postSignin’
Route::post(‘/logout’, [
‘as’ => ‘admin.logout’,
‘uses’ => ‘AdminController@getLogout’

#Access only login users
Route::group([‘middleware’ => [‘admin’]], function(){
Route::get(‘/’, [
‘as’ => ‘admin.index’, function () {
$title = “Dashboard”;
return view(‘BackEnd.dashboard’, compact(‘title’));



Now you are able to acess

Write your login code in Admin Controller

Get the size of an image in php


$img = get_headers(“YourimageURL.jpg”, 1);
print_r ($img);

// OUTPUT It returns araay of image detail
[0] => HTTP/1.1 200 OK
[Content-Type] => image/jpeg
[Content-Length] => 27781
[Connection] => close
[Cache-Control] => max-age=5184000
[X-XSS-Protection] => 1; mode=block
[X-Content-Type-Options] => nosniff
[X-Nginx-Cache-Status] => HIT
[X-Server-Powered-By] => Engintron
[Pragma] => public
[Vary] => Accept-Encoding
[Accept-Ranges] => bytes

Remove public from URL in Laravel

To remove public from URL in laravel you need to follow below steps.

Rename the server.php in the your Laravel root folder to index.php
Move all folder from public to root.
copy the .htaccess file from /public directory to your Laravel’s project root folder.

Note:- This is not a safe way. A safer way is place Laravel’s files outside your web server root and make the Laravel’s public directory your web server root. Route your website to public folder in place of public_html. You can do this with help of your server administrator.

What is self keyword in PHP

In PHP, you use the self keyword to access static properties and methods.

Below is the example to expalin self

Refer this code:

class ParentClass {
function test() {


function demo() {
echo ‘Example of self !’;

class ChildClass extends ParentClass {
function demo() {
echo ‘Return chlid class’;

$obj = new ChildClass();

In this example, self::demo() will always output ‘Example of self !’.
Now we can see that self refers to the class in which it is called.
So, you should use self only when $this is not available, or when you don’t want to allow descendant classes to overwrite the current method.

If we use $this in test method it will return “Return chlid class”;

Show queries in laravel


Laravel provides a database query builder. To see the query use toSql() in laravel.


$result = DB::table(‘users’)
->where(‘username’, ‘like’, ‘%admin%’)
->toSql() // to see the query which is executed
//  ->get()->toArray();  to get results

Laravel update record

Use Query Builder to update records, This is a sample:

->where('id', $id)
->update(['status' => "0"]);

Or Use another method to load DB 
$post = Post::find($id);
$post->status = "0";

generate random number in php

To generate 6 digit random number code in php.

Following function will help you to generate random number.

function _generate_code(){
$character_set_array = array();
$character_set_array[] = array(‘count’ => 3, ‘characters’ => ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ’);
$character_set_array[] = array(‘count’ => 3, ‘characters’ => ‘0123456789’);
$temp_array = array();
foreach ($character_set_array as $character_set) {
for ($i = 0; $i < $character_set[‘count’]; $i++) {
$temp_array[] = $character_set[‘characters’][rand(0, strlen($character_set[‘characters’]) – 1)];
return implode(”, $temp_array);

echo _generate_code();

What is friend function?

friend function

– Friend function is a friend of a class.
– It is allowed to access Public, private or protected data of that class.
– It can be declared anywhere in the class declaration
– It doesn’t have any effect of access control keywords like private, public or protected.