今天配置一个以前的PHP项目,当数据库、服务器都配置好以后,php也更改为合适版本以后,项目运行后一直显示DataBase Connection Failed,检查项目 config_mysql.inc.php 文件中的数据库参数也没发现错误,苦恼了好久 后来发现是因为没有打开PHP中的extension扩展导致的,打开php/php.ini文件,搜索extension ,如下图: 然后将注释掉的部分扩展打开,问题就解决了。
Keep in mind that the DBMS will enforce the same constraints on the SQL statements being executed via PHP as it would any other interface into the database. Attempts to INSERT records with duplicate keys would be rejected. Proper code should include tests for error conditions on the database ...
public function connect(Typecho_Config $config) { if ($this->_dbLink = @mysql_connect($config->host . (empty($config->port) ? '' : ':' . $config->port), $config->user, $config->password, true)) { if (@mysql_select_db($config->database, $this->_dbLink)) { if ($config->...
例如: <?php $servername = "localhost"; $username = "root"; $password = "password"; $dbname = "database"; $conn = new mysqli($servername, $username, $password, $dbname); if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } echo "Connected success...
点击“Test Connection”按钮来验证连接是否成功。 如果连接成功,则点击“OK”按钮来保存连接设置。 二、创建数据库表连接到数据库后,您可以创建一个或多个表来存储和管理数据。在phpstudy中创建数据库表的过程如下: 在“Database”面板中选择要操作的数据库,例如“mydatabase”。 点击“New Table”按钮来创建一...
$this->app->bind('db.connection', function ($app) { return $app['db']->connection(); }); } db.factory用来创建数据库连接实例,它将被注入到DatabaseManager中,在讲服务容器绑定时就说过了依赖注入的其中一个作用是延迟初始化对象,所以只要在用到数据库连接实例时它们才会被创建。
* Create a new database connection instance. * 创建一个新的数据库连接实例。 * @param PDO $pdo * @param array $config * @return void */ public function __construct(PDO $pdo, $config) { $this->pdo = $pdo; $this->config = $config; ...
{protected$connection=[//数据库类型'type' => 'mysql',//数据库连接DSN配置'dsn' => '',//服务器地址'hostname' => '127.0.0.1',//数据库名'database' => 'thinkphp',//数据库用户名'username' => 'root',//数据库密码'password' => '',//数据库连接端口'hostport' => '',//数据库连接...
$dbname = ‘your_database’; $connection = mysqli_connect($host, $username, $password, $dbname); if (mysqli_connect_errno()) { echo ‘数据库连接失败:’ . mysqli_connect_error(); } else { echo ‘数据库连接成功!’; } mysqli_close($connection); ...
Then the connection closes. Names of data sources that interact with a database are shown in the Database tool window with a little green circle. If you want to close a database connection, select a data source and click the Deactivate button () on the toolbar. Alternatively, select a ...