Symfony 3.2：twig/twig v2.0.0 需要 php ^7.0

Question

我只是想在一台装有 PHP 5.6 的服务器上安装我的 Symfony 3.2 应用程序，composer install 告诉我 twig/twig v2.0.0 requires php ^7.0 -> your PHP version (5.6.22) does not satisfy that requirement.

如何更改应用中使用的 Twig 版本？据我了解，Symfony 使用 twig-bundle (https://packagist.org/packages/symfony/twig-bundle)。

我需要在较低版本中添加 symfony/twig-bundle（哪个？）还是需要将 twig/twig v1.31.0 添加到我的 composer.json 要求部分？

---

更新：

我的composer.json：

{
    "name": "...",
    "license": "proprietary",
    "type": "project",
    "autoload": {
        "psr-4": {
            "": "src/"
        },
        "classmap": [
            "app/AppKernel.php",
            "app/AppCache.php"
        ]
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "require": {
        "php": ">=5.5.9",
        "symfony/symfony": "3.2.*",
        "twig/twig": "1.31.*",
        "doctrine/orm": "^2.5",
        "doctrine/doctrine-bundle": "^1.6",
        "doctrine/doctrine-cache-bundle": "^1.2",
        "symfony/swiftmailer-bundle": "^2.3",
        "symfony/monolog-bundle": "^3.0",
        "symfony/polyfill-apcu": "^1.0",
        "sensio/distribution-bundle": "^5.0",
        "sensio/framework-extra-bundle": "^3.0.2",
        "incenteev/composer-parameter-handler": "^2.0",
        "javiereguiluz/easyadmin-bundle": "^1.16",
        "doctrine/doctrine-fixtures-bundle": "^2.3",
        "symfony/dom-crawler": "^3.2"
    },
    "require-dev": {
        "sensio/generator-bundle": "^3.0",
        "symfony/phpunit-bridge": "^3.0"
    },
    "scripts": {
        "symfony-scripts": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ],
        "post-install-cmd": [
            "@symfony-scripts"
        ],
        "post-update-cmd": [
            "@symfony-scripts"
        ]
    },
    "extra": {
        "symfony-app-dir": "app",
        "symfony-bin-dir": "bin",
        "symfony-var-dir": "var",
        "symfony-web-dir": "web",
        "symfony-tests-dir": "tests",
        "symfony-assets-install": "relative",
        "incenteev-parameters": {
            "file": "app/config/parameters.yml"
        },
        "branch-alias": null
    }
}

我的命令：

Answer 1

您可以使用 Twig 1.x:。在您的 composer.json 中添加/更改它：

"require": {
    "symfony/symfony": "v3.2.*",
    "twig/twig": "1.31.*"
}

然后运行composer update。如果您想知道install 和update 之间的区别是什么，请阅读this answer。