Node.js 集成 php-cgi：解决 $_POST 数据为空的正确姿势

process.env["GATEWAY_INTERFACE"] = "CGI/1.1";
process.env["SCRIPT_FILENAME"] = path.resolve(resource);
process.env["REQUEST_METHOD"] = request[0]; // 例如 "POST"
process.env["REDIRECT_STATUS"] = 200;
process.env["QUERY_STRING"] = ""; // POST请求通常为空
process.env["CONTENT_LENGTH"] = postData.length; // POST数据的长度
process.env["CONTENT_TYPE"] = "application/x-www-form-urlencoded"; // 或其他MIME类型

// 错误示范：php-cgi无法从环境变量中获取POST数据体
// content = execSync(phpPath + "php-cgi", { env: process.env });
// 此时，print_r($_POST) 仍然会是 Array ( )

const { execSync } = require('child_process');
const path = require('path');

// 假设这些变量已经从传入的HTTP请求中解析出来
const phpPath = "/usr/bin/"; // php-cgi的路径
const resource = "/var/www/html/index.php"; // PHP脚本路径
const requestMethod = "POST"; // 请求方法
const postBody = "param1=value1&param2=value2"; // POST请求体数据

// 准备环境变量
const envVars = {
    "GATEWAY_INTERFACE": "CGI/1.1",
    "SCRIPT_FILENAME": path.resolve(resource),
    "REQUEST_METHOD": requestMethod,
    "REDIRECT_STATUS": 200,
    "QUERY_STRING": "", // POST请求的QUERY_STRING通常为空
    "CONTENT_LENGTH": Buffer.byteLength(postBody, 'utf8'), // 注意使用Buffer.byteLength获取字节长度
    "CONTENT_TYPE": "application/x-www-form-urlencoded"
};

try {
    // 正确的做法：将POST数据作为input选项传递给php-cgi
    const content = execSync(phpPath + "php-cgi", {
        env: envVars,
        input: postBody // 将POST数据通过stdin传递
    });
    console.log(content.toString());
} catch (error) {
    console.error("Error executing php-cgi:", error.message);
}

const { execSync } = require('child_process');
const path = require('path');

// 模拟HTTP请求的解析结果
const phpPath = "/usr/bin/";
const resource = "/var/www/html/index.php";
const currentRequestMethod = "POST"; // 或 "GET"
const getParams = "id=123&name=test"; // 假设这是GET请求的查询字符串
const postBody = "paramA=valueA&paramB=valueB"; // 假设这是POST请求的请求体

let envVars = {
    "GATEWAY_INTERFACE": "CGI/1.1",
    "SCRIPT_FILENAME": path.resolve(resource),
    "REQUEST_METHOD": currentRequestMethod,
    "REDIRECT_STATUS": 200,
    // 其他可能需要的环境变量...
};

let execOptions = {
    env: envVars
};

if (currentRequestMethod === "POST") {
    envVars["QUERY_STRING"] = "";
    envVars["CONTENT_LENGTH"] = Buffer.byteLength(postBody, 'utf8');
    envVars["CONTENT_TYPE"] = "application/x-www-form-urlencoded"; // 根据实际请求头设置
    execOptions.input = postBody;
} else if (currentRequestMethod === "GET") {
    envVars["QUERY_STRING"] = getParams;
    envVars["CONTENT_LENGTH"] = 0; // GET请求通常没有请求体
    envVars["CONTENT_TYPE"] = ""; // GET请求通常没有Content-Type
}

try {
    const content = execSync(phpPath + "php-cgi", execOptions);
    console.log(content.toString());
} catch (error) {
    console.error("Error executing php-cgi:", error.message);
}