insert multiple rows is slow in symfony 3 - symfony

Question

I am doing insert multiple rows in symfony. My code inserts very slowly. Does anyone have any ideas that won't help me! Thank you !
$manager = $this->getContainer()->get('doctrine')->getEntityManager();
// data : object
foreach ($data as $value) {
$entitty = $stkModel->getRepository()->findOneBy(['phone' => $value->getPhone()]);
if ($entity) {
$stk = $stkModel->getEntity();
$stk->setName('mina');
$stk->setStatus(1);
$manager->persist($stk);
$manager->flush();
}
if ($stk) {
$entitty = $titleModel->getRepository()->findOneBy(['stkId' => $stk->getId()]);
$title = $titleModel->getEntity();
$title->setName('dev');
$title->setOrder(2);
$manager->persist($title);
$manager->flush();
}
// Here I take $title->getId();
}

Answer 1

First, you need to call persist only at entities that are created with new. But this will not give you speed performance.
The flush slows the application down every time you use it, because here the query will be send to the database. To speed up your application you have to minimize the use of flush. In your case, just do one flush after you updated your entites.
$manager = $this->getContainer()->get('doctrine')->getEntityManager();
// data : object
foreach ($data as $value) {
$entitty = $stkModel->getRepository()->findOneBy(['phone' => $value->getPhone()]);
if ($entity) {
$stk = $stkModel->getEntity();
$stk->setName('mina');
$stk->setStatus(1);
// $manager->persist($stk); <-- Don't need persist here because your object is coming out from the entity manager
}
if ($stk) {
$entitty = $titleModel->getRepository()->findOneBy(['stkId' => $stk->getId()]);
$title = $titleModel->getEntity();
$title->setName('dev');
$title->setOrder(2);
// $manager->persist($stk); <-- same as mention above
}
}
// call flush once at the end
$manager->flush();
In some cases, you need to call flush in every loop in a foreach. That might happen if you need to query it. But in your case you just search for a id, which didn't change anyway.