如何在數據庫中動態創建表使用原則

Question

無法動態創建表使用原則，我有插入，查詢更新，但我不能夠在數據庫中創建表，我試圖找到，但它顯示使用命令創建的錶行，我想用PHP腳本和動態

這裏創建是我的代碼

<?php 
//bootstrap.php 
// I am able to fetch ,insert ,delete records from existing tables and  wanted to 
//know if there is any way i can create table using php script 
// i am aware that we can create table using CMD but willing to create using  only php scripts i.e Dynamically 


use Doctrine\ORM\Tools\Setup; 
use Doctrine\ORM\EntityManager; 
use Doctrine\DBAL\DriverManager; 
use Doctrine\DBAL\Connection; 
use Doctrine\ORM\Mapping\Driver\AnnotationDriver; 
use Doctrine\Common\Annotations\AnnotationReader; 
use Doctrine\Common\Annotations\AnnotationRegistry; 

require_once __DIR__ . '/vendor/autoload.php'; 
require_once __DIR__ . '/entities/Users.php'; 

$paths   = array(__DIR__ . '/entities'); 
$isDevMode  = false; 
$connectionParams = array(
'driver' => 'pdo_mysql', 
'user'  => 'root', 
'host'  => 'localhost', 
'password' => '', 
'dbname' => 'doctrine', 
); 

$config = Setup::createConfiguration($isDevMode); 
$driver = new AnnotationDriver(new AnnotationReader(), $paths); 

// registering noop annotation autoloader - allow all annotations by default 
AnnotationRegistry::registerLoader('class_exists'); 
$config->setMetadataDriverImpl($driver); 

$em = EntityManager::create($connectionParams, $config); 

$query = $em->createQuery('SELECT u.email, u.password FROM users u'); 
$users = $query->getResult(); // array of CmsUser username and name values 
echo $users[0]['email']; 

Answer 1

以下兩個答案幫我解決一個問題相媲美：

• Symfony2 Doctrine entity: How to create table in controller?
• Doctrine automatically create all the database tables?

代碼：

$metadata = $entityManager->getClassMetadata($entityClass) 

$schemaTool = new \Doctrine\ORM\Tools\SchemaTool($entityManager); 
// you can drop the table like this if necessary 
$schemaTool->dropSchema(array($metadata)); 
$schemaTool->createSchema(array($metadata));