Php Symfony 3.3.18：编写器更新/安装/需要fire=>；内存不足

我正在尝试从Symfony 3.3升级一个项目。 在删除composer.lock和composer require后运行composer update、composer install时出现此错误

PHP致命错误：第223行的phar://C:/Users/bbarhoum/Documents/ComposerSetup/bin/composer.phar/src/composer/dependencysolver/Solver.PHP中内存不足（分配了1601437696）（试图分配268435456字节）

这是我的composer.json：

{
    "name" : "symfony/framework-standard-edition",
    "license" : "MIT",
    "type" : "project",
    "description" : "The \"Symfony Standard Edition\" distribution",
    "autoload" : {
        "psr-0" : {
            "Detection" : "vendor/mobile-detect/namespaced"
        },
        "psr-4" : {
            "" : "src/"
        },
        "classmap" : [
            "app/AppKernel.php",
            "app/AppCache.php"
        ],
        "files" : [
            "vendor/wsdlwriter/classes/WsdlDefinition.php",
            "vendor/wsdlwriter/classes/WsdlWriter.php",
            "vendor/php-ga/src/autoload.php",
            "vendor/phpunit-selenium/PHPUnit/Extensions/SeleniumTestCase/Autoload.php",
            "vendor/htmlpurifier/library/HTMLPurifier.auto.php"
        ]
    },
    "require" : {
        "php" : ">=5.5.9",
        "symfony/symfony" : "3.3.*",
        "doctrine/orm" : "^2.5",
        "doctrine/doctrine-bundle" : "^1.6",
        "doctrine/doctrine-cache-bundle" : "^1.2",
        "symfony/swiftmailer-bundle" : "^2.3",
        "symfony/assetic-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",
        "elasticsearch/elasticsearch" : "~5.0",
        "white-october/pagerfanta-bundle": "^1.2",
        "jasig/phpcas" : "1.3.5"
    },
    "require-dev" : {
        "sensio/generator-bundle" : "^3.0",
        "symfony/phpunit-bridge" : "^3.0",
        "doctrine/doctrine-fixtures-bundle" : "2.3.0",
        "phpunit/phpunit" : "5.5.*"
    },
    "scripts" : {
        "post-install-cmd" : [
            "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::removeSymfonyStandardFiles",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ],
        "post-update-cmd" : [
            "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::removeSymfonyStandardFiles",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ]
    },
    "config" : {
        "bin-dir" : "bin",
        "platform" : {
            "php" : "5.6.28"
        }
    },
    "minimum-stability" : "stable",
    "extra" : {
        "symfony-app-dir" : "app",
        "symfony-bin-dir" : "bin",
        "symfony-web-dir" : "web",
        "symfony-assets-install" : "relative",
        "incenteev-parameters" : {
            "file" : "app/config/parameters.yml"
        },
        "branch-alias" : {
            "dev-master" : "3.2-dev"
        }
    }
}

编写器诊断：

Checking platform settings: OK 
Checking git settings: OK 
Checking http connectivity to packagist: OK 
Checking https connectivity to packagist: OK 
Checking HTTP proxy: OK 
Checking HTTP proxy support for request_fulluri: OK 
Checking HTTPS proxy support for request_fulluri: OK 
Checking github.com rate limit: OK 
Checking disk free space: OK 
Checking pubkeys: Tags Public Key Fingerprint: 57815BA2 7E54DC31 7ECC7CC5 573090D0  87719BA6 8F3BB723 4E5D42D0 84A14642 Dev Public Key Fingerprint: 4AC45767 E5EC2265 2F0C1167 CBBB8A2B  0C708369 153E328C AD90147D AFE50952 OK Checking composer version: OK 
Composer version:1.9.3 
PHP version: 5.6.28 - Package overridden via config.platform (actual: 5.6.30)

---

尝试运行命令以删除PHP的内存限制

php -d memory_limit=-1 composer update

您可能需要使用composer exe的绝对路径

如果这不起作用，请检查您的PHP版本是否适用于x86或x64，如果可能，请更改为x64版本

另外，请确保已将composer更新为最新版本，因为它将提高性能<代码>作曲家自我更新

---

希望这对我有很多帮助。

您使用哪个PHP版本运行composer？您是否尝试缩小版本限制？例如，您可以将代码> SyfOn/SimfOON/COD> > <代码> V3.3.18，因为给定的版本约束永远不会解决到后来的版本（因为3.3从2018年7月起就失去了安全支持——这意味着安全漏洞永远不会得到修复，所以您应该考虑更新！）PHP版本：5.6.30我已尝试使用准确的版本修复所有软件包，但它不起作用。您可以尝试使用较新版本的PHP运行composer-您的平台设置将确保不安装不兼容的软件包。此外，您应该计划很快更新PHP。一年多以来，PHP5.6不再收到任何更新，PHP7速度更快（同样适用于Composer）