Swoole\Coroutine\MySQL::recv()函数—用法及示例

函数名称：Swoole\Coroutine\MySQL::recv()

函数描述：该函数用于接收MySQL Server的响应结果。

适用版本：Swoole-4.4.0 及以上版本

用法：

1. 创建Swoole\Coroutine\MySQL对象：

$mysql = new Swoole\Coroutine\MySQL();

2. 连接MySQL Server：

$serverInfo = [
    'host' => '127.0.0.1',
    'port' => 3306,
    'user' => 'root',
    'password' => 'password',
    'database' => 'test',
];
$connected = $mysql->connect($serverInfo);
if (!$connected) {
    echo "MySQL连接失败：" . $mysql->connect_error . PHP_EOL;
    return;
}

3. 执行SQL查询语句：

$sql = 'SELECT * FROM `users` WHERE `id` = 1';
$queryResult = $mysql->query($sql);
if ($queryResult === false) {
    echo "查询失败：" . $mysql->error . PHP_EOL;
    return;
}

4. 接收MySQL Server的响应结果：

$response = $mysql->recv();
if ($response === false) {
    echo "接收响应失败：" . $mysql->error . PHP_EOL;
    return;
}

示例：

<?php
$mysql = new Swoole\Coroutine\MySQL();

$serverInfo = [
    'host' => '127.0.0.1',
    'port' => 3306,
    'user' => 'root',
    'password' => 'password',
    'database' => 'test',
];
$connected = $mysql->connect($serverInfo);
if (!$connected) {
    echo "MySQL连接失败：" . $mysql->connect_error . PHP_EOL;
    return;
}

$sql = 'SELECT * FROM `users` WHERE `id` = 1';
$queryResult = $mysql->query($sql);
if ($queryResult === false) {
    echo "查询失败：" . $mysql->error . PHP_EOL;
    return;
}

$response = $mysql->recv();
if ($response === false) {
    echo "接收响应失败：" . $mysql->error . PHP_EOL;
    return;
}

print_r($response);

以上示例展示了如何使用Swoole\Coroutine\MySQL::recv()函数来接收MySQL Server的响应结果。首先创建MySQL对象并连接到MySQL Server，然后执行SQL查询语句，并最后通过recv()函数接收响应结果。如果成功接收到响应，则打印输出结果。