如何使用Doctrine DBAL？

Question

我有这个文件夹结构

[-] myapp/
    [+] app/
    [-] lib/
        [-] vendor/
            [-] doctrine/
                [-] Doctrine/
                        Common/
                        DBAL/
                        Symfony/
                [+] bin/
    [-] sites/
        [-] default/
            [-] test/
                    test-doctrine-dbal.php

我在文档中尝试了这些代码。

    <?php

use Doctrine\Common\ClassLoader;

require dirname(__FILE__).'/../../../lib/vendor/doctrine/Doctrine/Common/ClassLoader.php';

$classLoader = new ClassLoader('Doctrine', dirname(__FILE__).'/../../../lib/vendor/doctrine/Doctrine/DBAL/DriverManager.php');
$classLoader->register();

$config = new \Doctrine\DBAL\Configuration();
$connectionParams = array(
    'dbname' => 'cdcol',
    'user' => 'root',
    'password' => '',
    'host' => 'localhost',
    'driver' => 'pdo_mysql',
);
$conn = DriverManager::getConnection($connectionParams, $config);

$sql = "SELECT * FROM cds";
$stmt = $conn->query($sql);
while ($row = $stmt->fetch()) {
    echo $row['titel'];
}
?>

我得到了警告：

Warning: require(D:\xampp\htdocs\myphp\sites\default\test/../../../lib/vendor/doctrine/Doctrine/DBAL/DriverManager.php\Doctrine\DBAL\Configuration.php) [function.require]: failed to open stream: No such file or directory in D:\xampp\htdocs\myphp\lib\vendor\doctrine\Doctrine\Common\ClassLoader.php on line 148

和一个错误：

Fatal error: require() [function.require]: Failed opening required 'D:\xampp\htdocs\myphp\sites\default\test/../../../lib/vendor/doctrine/Doctrine/DBAL/DriverManager.php\Doctrine\DBAL\Configuration.php' (include_path='.;D:\xampp\php\PEAR') in D:\xampp\htdocs\myphp\lib\vendor\doctrine\Doctrine\Common\ClassLoader.php on line 148

我对PHP名称空间了解不多。阅读PHP手册中的PHP命名空间仍然不能解决这个问题。如果我想在该目录结构中使用Doctrine DBAL，该代码是否正确？

Answer 1

您需要将Doctrine库路径添加到include_path。请参阅get_include_path和set_include_path PHP函数。

Answer 2

在我看来这是错误的(来自警告)

D:\xampp\htdocs\myphp\sites\default\test/../../../lib/vendor/doctrine/Doctrine/DBAL/DriverManager.php\Doctrine\DBAL\Configuration.php

我不太了解php，但我不认为文件路径可以解析。现在，试着删除dirname(___FILE___)并在其中硬编码路径。

Answer 3

ClassLoader构造函数的第二个参数无效：

新原则=新原则(‘

’，dirname(_FILE_).'/../../../lib/vendor/doctrine/Doctrine/DBAL/DriverManager.php')；)

第二个参数应该是Doctrine目录的include path，并且不应该是一个文件。

因此，正确的一行是：

新原则=新原则(‘

’，'/../../../lib/vendor/doctrine/');

)