PHP中的SQL Server存储过程输出参数

<?php
// 连接到 SQL Server 数据库
$serverName = "your_server_name";
$connectionOptions = array(
    "Database" => "your_database_name",
    "Uid" => "your_username",
    "PWD" => "your_password"
);
$conn = sqlsrv_connect($serverName, $connectionOptions);

if (!$conn) {
    die(print_r(sqlsrv_errors(), true));
}

// 创建存储过程
$sql = "CREATE PROCEDURE GetOutputParam
    @Param1 INT OUTPUT
AS
BEGIN
    SET @Param1 = 123
END";

$stmt = sqlsrv_query($conn, $sql);
if (!$stmt) {
    die(print_r(sqlsrv_errors(), true));
}

// 调用存储过程
$sql = "{CALL GetOutputParam (?)}";
$param1 = 0;
$params = array(
    array(&$param1, SQLSRV_PARAM_OUT)
);

$stmt = sqlsrv_prepare($conn, $sql, $params);
if (!$stmt) {
    die(print_r(sqlsrv_errors(), true));
}

$result = sqlsrv_execute($stmt);
if (!$result) {
    die(print_r(sqlsrv_errors(), true));
}

// 获取输出参数
if (sqlsrv_fetch($stmt)) {
    echo "Output parameter: " . $param1 . PHP_EOL;
} else {
    die(print_r(sqlsrv_errors(), true));
}

sqlsrv_free_stmt($stmt);
sqlsrv_close($conn);
?>