set() публичный Метод

Saves data in the cache.
public set ( string $entryIdentifier, string $data, array $tags = [], integer $lifetime = null ) : void
$entryIdentifier string An identifier for this specific cache entry
$data string The data to be stored
$tags array Tags to associate with this cache entry
$lifetime integer Lifetime of this cache entry in seconds. If NULL is specified, the default lifetime is used. "0" means unlimited liftime.
Результат void
 /**
  * @test
  */
 public function flushRemovesAllCacheEntries()
 {
     $cache = $this->createMock(FrontendInterface::class);
     $backend = new TransientMemoryBackend($this->getEnvironmentConfiguration());
     $backend->setCache($cache);
     $data = 'some data' . microtime();
     $backend->set('TransientMemoryBackendTest1', $data);
     $backend->set('TransientMemoryBackendTest2', $data);
     $backend->set('TransientMemoryBackendTest3', $data);
     $backend->flush();
     $this->assertFalse($backend->has('TransientMemoryBackendTest1'), 'TransientMemoryBackendTest1');
     $this->assertFalse($backend->has('TransientMemoryBackendTest2'), 'TransientMemoryBackendTest2');
     $this->assertFalse($backend->has('TransientMemoryBackendTest3'), 'TransientMemoryBackendTest3');
 }