require_once ('vendor/autoload.php');
use \Dejurin\GoogleTranslateForFree;

$source = 'en';
$target = 'ru';
$attempts = 5;
$text = 'Hello';

$tr = new GoogleTranslateForFree();
$result = $tr->translate($source, $target, $text, $attempts);

var_dump($result); 

/* 
	string(24) "Здравствуйте" 
*/

$source = 'en';
$target = 'ru';
$attempts = 5;
$arr = ['hello','world'];

$tr = new GoogleTranslateForFree();
$result = $tr->translate($source, $target, $arr, $attempts);

var_dump($result); 

/*
	array(2) {
	  [0]=>
	  string(24) "Здравствуйте"
	  [1]=>
	  string(6) "Мир"
	}

*/