How to determine request input array is empty?

Question

I am using laravel 5.2. I have a question. If I send a request like

http://localhost/test?sports[]=soccer&sports[]=basketball

I can get sports as an array with 2 elements.

But if I send request like:

http://localhost/test?sports[]

I get it by $sports = $request->input('sports'), I think it is an empty array, but it's actually not. I var_dump() it:

array(1) { [0]=> string(0) "" }

So someone can tell me how can I determine the request input array data is empty?

Supplement:

My routes.php here:

Route::get('/test',function(Illuminate\Http\Request $request){
    var_dump($request->has('sports'));
});

I access http://localhost/test?sports[]

It output true.

var_dump $request->has('sports') check the output should be false. — SergkeiM
– SergkeiM, Commented Dec 27, 2016 at 14:15

Amit Gupta · Accepted Answer · 2016-12-27 14:58:13Z

1

I don't think there is any built-in functionality for what you need but you can create a Request macro as:

Request::macro('someCoolName', function ($key) {
    return is_array($this->input($key)) && (count($this->input($key)) == 1) && empty($this->input($key)[0]) ? [] : $this->input($key);
});

Note - Add it in boot() method of App\Providers\AppServiceProvider.

And then you can use it as:

$request->someCoolName('sports'); // returns []

It returns emprty array [] if your URL is like http://localhost/test?sports[]

answered Dec 27, 2016 at 14:58

Amit Gupta

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