<?php
$current_time = time();

$req = $bdd->prepare('SELECT * FROM flowers WHERE id_account = ?');
$req->execute(array($_SESSION['id']));

while ($result = $req->fetch())
{
	$difference = $current_time - $result['born'];

	if ($difference >= 10)
	{
		$difference / 10;
		$cm = $result ['cm'] + 10;

		$req1 = $bdd->prepare('UPDATE flowers SET cm = :cm, born = :born WHERE id_account = :id_account AND id = :id');
		$req1->execute(array(
			'cm' => $cm,
			'born' => $current_time,
			'id_account' => $_SESSION['id'],
			'id' => $result['id']
			));
	}

	else
	{
	}
}

$req->closeCursor();
?>