simpleWordsCloud/get.php

<?php

include('db.php');
$db = new DataBase();
if (!$db->isInit()) {
	echo 'Error db init';
	return;
}

if (!isset($_GET['id'])) {
	echo json_encode(false);
}
$id = $_GET['id'];

if ($words = $db->getWordsList($id)) {
	$wordsClean = [];
	foreach ($words as $key => $word) {
		$wordsClean[] = array($word['word'], $word['relative']);
	}
	echo json_encode($wordsClean);
} else {
	echo json_encode('No id');
}