PHP Use Namespace from Another class within private function

Question

So I'm using more specifically Elasticsearch which is available through composer. It is the 5.0 version. I'm trying to build the client connection inside a private function inside a class. Basically what I want is 1 class with 2 private functions. The first private function will create the client connection using:

$hosts = ['host' => 'http://censored'];
$clientBuilder = ClientBuilder::create();
$clientBuilder->setHosts($hosts);
$clientBuilder->setSerializer('\Elasticsearch\Serializers\EverythingToJSONSerializer');
$client = $clientBuilder->build();
$searchParams = ['index' => 'main'];

Mind you that $searchparams and $client will have to be accessible by the second private function mentioned below.

The second private function will take in a type and query from the public function and use $client and $searchparam to initiate a API request to Elasticsearch

Summary: The public function will be called from another file. To use it it will require a type ($type) and query ($query) to be passed, which will be passed to the second private function. The second private function will initiate a API request to Elasticsearch and give back the results to the public function, which then the public function will echo out the results back to the user.

I believe this is possible, but I don't know how to call or use another namespace within a private function. Putting that into a private function and autoloading Elasticsearch beforehand results in ClientBuilder not being found.

Thank you in advance and sorry for the long post.

Kazz Kazz · Accepted Answer · 2017-06-03T03:05:29

it doesn't matter where you call it, use is the exact same...

for example file foo.php:

namespace Foo\Bar;

function Baz() { echo 'Baz()...'; }

class Qux
{
    public function         PublicMethod() {
        echo 'PublicMethod()...';
    }
    public static function  StaticMethod() {
        echo 'StaticMethod()...';
    }

}

you could use unqualified name if you are in same namespace or use namespace:

namespace Foo\Bar;
include 'foo.php';

Baz();

Qux::StaticMethod();

$qux = new Qux();
$qux->PublicMethod();

or

namespace MyNamespace;
include 'foo.php';

use function Foo\Bar\Baz;
use Foo\Bar\Qux;

Baz();

Qux::StaticMethod();

$qux = new Qux();
$qux->PublicMethod();

or qualified name

namespace MyNamespace;
include 'foo.php';

use Foo\Bar;

Bar\Baz();

Bar\Qux::StaticMethod();

$qux = new Bar\Qux();
$qux->PublicMethod();

or fully qualified name

include 'foo.php';

\Foo\Bar\Baz();

\Foo\Bar\Qux::StaticMethod();

$qux = new \Foo\Bar\Qux();
$qux->PublicMethod();

backslash \ on the beggining mean global

PHP Use Namespace from Another class within private function

1 Answers