pecl install redis

extension=redis.so

php -m | grep redis

<?php
// Connection parameters
$host = "192.xx.xx.2";       // Instance VIP address
$port = 6379;                 // Instance port
$password = "crs-xxxx:password";  // Default account password format: Instance ID:Password

// Create a connection.
$redis = new Redis();

// Connect to the instance and set the timeout to 2 seconds.
$redis->connect($host, $port, 2.0);

// Authentication
$redis->auth($password);

// Select a database (proxy mode supports multiple DBs).
$redis->select(0);

// Write data.
$redis->set("name", "Distributed Cache");

// Read data.
$value = $redis->get("name");
echo "get name: " . $value . "\\n";

// Set a Key with an expiration time.
$redis->setex("session:user123", 3600, "session_data");

// Hash operations
$redis->hSet("user:1001", "name", "Zhang San");
$redis->hSet("user:1001", "age", "28");
$userInfo = $redis->hGetAll("user:1001");
echo "user info: ";
print_r($userInfo);

// Close the connection.
$redis->close();
?>

<?php
$host = "192.xx.xx.2";
$port = 6379;
$username = "myuser";
$password = "myuser@MyPassword";  // Proxy mode custom account: the entire "username@password" string is passed as the password.

$redis = new Redis();
$redis->connect($host, $port, 2.0);
$redis->auth($password);

$redis->set("key", "value");
echo $redis->get("key") . "\\n";

$redis->close();
?>

<?php
$host = "192.xx.xx.2";
$port = 6379;
$password = "crs-xxxx:password";

// Use a persistent connection. The fourth parameter is the persistent connection flag.
$redis = new Redis();
$redis->pconnect($host, $port, 2.0, "persistent_id_01");
$redis->auth($password);

// Set the read/write timeout.
$redis->setOption(Redis::OPT_READ_TIMEOUT, 2);

// Business operations
$redis->set("counter", 0);
$redis->incr("counter");
$count = $redis->get("counter");
echo "counter: " . $count . "\\n";

// Persistent connections do not need to be closed explicitly. They are managed by the PHP lifecycle.
?>

<?php
$host = "192.xx.xx.2";
$port = 6379;
$password = "crs-xxxx:password";
$caCertPath = "/path/to/ca.pem";  // Path to the CA certificate file

$redis = new Redis();

// Configure TLS/SSL parameters.
$redis->connect("tls://" . $host, $port, 2.0, null, 0, 0, [
    'stream' => [
        'verify_peer' => true,
        'verify_peer_name' => false,
        'cafile' => $caCertPath,
    ]
]);

$redis->auth($password);

$redis->set("ssl_test", "encrypted_connection");
echo $redis->get("ssl_test") . "\\n";

$redis->close();
?>