Question

目前，我按以下方式初始化数据库：

$di->set('db', function() use ($config){
    return new \Phalcon\Db\Adapter\Pdo\Mysql(
        array(
            "host" => $config->database->host,
            "username" => $config->database->username,
            "password" => $config->database->password,
            "dbname" => $config->database->name
        )
    );
});

但是当mysql凭据错误或数据库不存在时，Phalcon返回空白页面而没有任何错误消息。这种情况真的很头疼，因为登录/密码/主机中的小错误导致几乎无法检测到的错误。

我认为Pdo构造函数在这种情况下会停止PHP代码执行。

那么当您希望网站告诉您数据库问题时，如何在Phalcon中初始化数据库连接？

Answer 1

我结束了以下代码：

$di->set('db', function() use ($config){
    try {
        $db = new \Phalcon\Db\Adapter\Pdo\Mysql(
            array(
                "host" => $config->database->host,
                "username" => $config->database->username,
                "password" => $config->database->password,
                "dbname" => $config->database->name
            )
        );
    } catch (Exception $e) {
        die("<b>Error when initializing database connection:</b> " . $e->getMessage());
    }
    return $db;
});

请告诉我是否有更好的方法。

Answer 2

我使用此配置：

$di->set('db', function () use ($config) {
        $connection = new \Phalcon\Db\Adapter\Pdo\Mysql(array(
            "host" => $config->database->host,
            "username" => $config->database->username,
            "password" => $config->database->password,
            "dbname" => $config->database->dbname,
            "options" => array(
                PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'UTF8'"
            )
        ));
        if (APPLICATION_ENV == 'development') {
            $eventsManager = new Phalcon\Events\Manager();
            $logger = new Phalcon\Logger\Adapter\File($config->application->logsDir . "sql_debug.log");
            //Listen all the database events
            $eventsManager->attach('db', function ($event, $connection) use ($logger) {
                if ($event->getType() == 'beforeQuery') {
                    $logger->log($connection->getSQLStatement(), Logger::INFO);
                }
            });
            //Assign the eventsManager to the db adapter instance
            $connection->setEventsManager($eventsManager);
        }
        return $connection;
    }, true);

对于utf8还有一个选项，如果应用程序环境是开发，它会将所有sql调用记录到sql_debug.log。您可以看到，我使用的是$ config，其定义如下：

switch (APPLICATION_ENV) {
        case 'development':
            $config = new Phalcon\Config\Adapter\Ini(__DIR__ . '/../app/config/config_dev.ini');
            break;
        case 'testing':
            $config = new Phalcon\Config\Adapter\Ini(__DIR__ . '/../app/config/config_test.ini');
            break;
        case 'production':
            $config = new Phalcon\Config\Adapter\Ini(__DIR__ . '/../app/config/config_production.ini');
            break;
    }

在配置文件中你可以找到这样的东西：

[database]
adapter = Mysql
host = localhost
username = root
password =
dbname = db_name

Answer 3

你可以使它更通用。你可以捕获可能发生的所有错误并很好地显示它们。我使用下面的bootstrap文件（config）进行开发described here。

<?php

error_reporting(-1);

$debug = new Phalcon\Debug();
$debug->listen();

/** Read the configuration */
$config = include __DIR__ . '/../config/config.php';

/** Read auto-loader */
include __DIR__ . "/../app/config/loader.php";

/** Read services */
include __DIR__ . "/../app/config/mvc/services.dev.php";

/** Handle the request */
$application = new \Phalcon\Mvc\Application();
$application->setDI($di);
if (!empty($_SERVER['REQUEST_URI'])) {
    $uriParts = explode('?', $_SERVER['REQUEST_URI']);
    $uri = $uriParts[0];
} else {
    $uri = '/';
}
echo $application->handle($uri)->getContent();

结论是有趣的部分在这里：

$debug = new Phalcon\Debug();
$debug->listen();

Answer 4

在phalcon.ini中设置错误报告有帮助吗？

extension=phalcon.so
error_reporting = E_ALL | E_STRICT
display_errors = On

如何在Phalcon中正确初始化数据库连接

4 个答案: