阅读量:0
在 PHP 中,使用 MySQLi 连接池可以通过创建一个自定义类来实现。以下是一个简单的示例,展示了如何实现一个基本的 MySQLi 连接池:
- 首先,创建一个名为
MysqliConnectionPool
的类,用于管理连接池。
class MysqliConnectionPool { private $host = "localhost"; private $user = "username"; private $password = "password"; private $database = "database_name"; private $poolSize = 5; private $connections = []; public function __construct($host, $user, $password, $database, $poolSize) { $this->host = $host; $this->user = $user; $this->password = $password; $this->database = $database; $this->poolSize = $poolSize; } public function getConnection() { if (empty($this->connections)) { for ($i = 0; $i < $this->poolSize; $i++) { $this->connections[] = new mysqli($this->host, $this->user, $this->password, $this->database); if ($this->connections[$i]->connect_error) { die("Connection failed: " . $this->connections[$i]->connect_error); } } } $connection = array_pop($this->connections); return $connection; } public function releaseConnection($connection) { array_push($this->connections, $connection); } }
- 然后,实例化
MysqliConnectionPool
类并设置相关参数。
$pool = new MysqliConnectionPool("localhost", "username", "password", "database_name", 5);
- 使用
getConnection()
方法从连接池中获取一个连接。
$connection = $pool->getConnection();
- 执行 SQL 查询并处理结果。
$query = "SELECT * FROM your_table"; $result = $connection->query($query); if ($result->num_rows > 0) { while($row = $result->fetch_assoc()) { echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>"; } } else { echo "0 results"; }
- 完成查询后,使用
releaseConnection()
方法将连接放回连接池。
$pool->releaseConnection($connection);
这个示例展示了如何创建一个简单的 MySQLi 连接池。你可以根据需要调整连接池的大小、参数等。请注意,这个示例仅用于演示目的,实际生产环境中可能需要更复杂的错误处理和连接管理。