使用数据库驻留连接池 数据库驻留连接池是 Oracle Database 11g 的一个新特性。对 PHP,它允许 Web 应用程序随着站点吞吐量的增长对连接数进行扩充。它还支持多台计算机上的多个 Apache 进程共享一个小规模的数据库服务器进程池。没有 DRCP,标准 PHP 连接必须启动和终止一个服务器进程。一个非 DRCP 持久性连接即...
env文件中的QUEUE_CONNECTION变量从而将 database 作为你的应用队列驱动程序:QUEUE_CONNECTION=databaseRedis要使用 redis 队列驱动程序,需要在 config/database.php配置文件中配置一个 redis 数据库连接。Redis 集群如果你的Redis队列当中使用了Redis集群, 那么你的队列名称就必须包含一个 key hash tag.。这是为了确保...
下面的代码中有一个 Database 的类,它需要一个适配器来与数据库交互。我们在构造函数里实例化了适配器,从而产生了耦合。这会使测试变得很困难,而且 Database 类和适配器耦合的很紧密。 <?php namespace Database; class Database { protected $adapter; public function __construct() { $this->adapter = ne...
Dynamically creating database backup via program will be hand in many a situations. We can schedule the backup process periodically by using CRON jobs. Taking the database backup using PHP programming is easy. In this tutorial, we are going to learn how to backup MySQL database with a simple...
php namespace Mysql; class Database { public function beforeConnect($connStr) { echo "before connect\n"; } public function afterConnect($connStr) { echo "after connect\n"; } public function connect($connStr) { $beforeMethod = "before".ucfirst(__FUNCTION__); $args = func_get_args()...
MySQL can be easily implemented with PHP for server-based web applications using a database by even non-technical developers. PHP remains feature-rich and up-to-date with the addition of new frameworks and the latest technologies. PHP’s simplistic approach has made it popular and assures its ...
These variables are used to create a connection string to the database. Thedsnis the Data Source Name, which contains the information required to connect to the database. $pdo = new PDO($dsn, $user, $passwd); A newPDOobject is created. We pass the constructor the data source name and...
Go to the “Application Logs” or “Server Logs” section to check PHP errors. PHP Error Log Reading PHP error logs give you an informative entry describing what occurred. Here’s an example log entry: [13-Mar-202512:00:00UTC]PHP Fatal error: Uncaught Exception: Database connection failed...
sqlplus phphol/welcome select username, program from v$session where username = 'PHPHOL'; Many more rows than previously are returned. The rows with httpd@localhost.localdomain (TNS V1-V3) correspond to a running Apache process holding a database connection open. For PHP, Apache runs in a...
此后,这两名程序员开始重写整个PHP核心,并于1999年发布了Zend Engine 1.0,这也意味着PHP 4.0的诞生。2004年7月,Zend Engine 2.0发布,由此也将PHP带入了PHP5时代。PHP5包含了许多重要的新特性,如增强的面向对象编程的支持、支持PDO(PHP Data Objects)扩展机制以及一系列对PHP性能的改进。