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:
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, $connection);
}
}
MysqliConnectionPool
类并设置相关参数。$pool = new MysqliConnectionPool("localhost", "username", "password", "database_name", 5);
getConnection()
方法从连接池中获取一个连接。$connection = $pool->getConnection();
$query = "SELECT * FROM your_table";
$result = $connection->query($query);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
}
} else {
echo "0 results";
}
releaseConnection()
方法将连接放回连接池。$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。