Installazione di Symfony2

Question

Ho deciso di imparare symfony, quindi ho provato ad installarlo. Dopo aver ottenuto compositore come detto nel sito, ho eseguito il seguente comando per creare un progetto e ottenere Symfony2

compositore creare-progetto symfony/quadro-standard edition Sito web/test

e purtroppo ottenuto questo come un messaggio:

> Installing symfony/framework-standard-edition (v2.7.1) 
     - Installing symfony/framework-standard-edition (v2.7.1) 
     Downloading: 100%  

--- 


> Created project in Website/test 
    Loading composer repositories with package information 
    Installing dependencies (including require-dev) from lock file 
    Your requirements could not be resolved to an installable set of packages. 

**Problem 1** 


- Installation request for sensiolabs/security-checker v2.0.5 -> satisfiable by sensiolabs/security-checker[v2.0.5]. 

- sensiolabs/security-checker v2.0.5 requires ext-curl * -> the requested PHP extension curl is missing from your system. 

**Problem 2** 

- sensiolabs/security-checker v2.0.5 requires ext-curl * -> the requested PHP extension curl is missing from your system. 

- sensio/distribution-bundle v4.0.0 requires sensiolabs/security-checker ~2.0 -> satisfiable by sensiolabs/security-checker[v2.0.5]. 

- Installation request for sensio/distribution-bundle v4.0.0 -> satisfiable by sensio/distribution-bundle[v4.0.0]. 

Il file composer.json:

{ 
    "name": "symfony/framework-standard-edition", 
    "license": "MIT", 
    "type": "project", 
    "description": "The \"Symfony Standard Edition\" distribution", 
    "autoload": { 
     "psr-4": { "": "src/", "SymfonyStandard\\": "app/SymfonyStandard/" } 
    }, 
    "require": { 
     "php": ">=5.3.9", 
     "symfony/symfony": "2.7.*", 
     "doctrine/orm": "~2.2,>=2.2.3,<2.5", 
     "doctrine/dbal": "<2.5", 
     "doctrine/doctrine-bundle": "~1.4", 
     "symfony/assetic-bundle": "~2.3", 
     "symfony/swiftmailer-bundle": "~2.3", 
     "symfony/monolog-bundle": "~2.4", 
     "sensio/distribution-bundle": "~4.0", 
     "sensio/framework-extra-bundle": "~3.0,>=3.0.2", 
     "incenteev/composer-parameter-handler": "~2.0" 
    }, 
    "require-dev": { 
     "sensio/generator-bundle": "~2.3" 
    }, 
    "scripts": { 
     "post-root-package-install": [ 
      "SymfonyStandard\\Composer::hookRootPackageInstall" 
     ], 
     "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" 
    }, 
    "extra": { 
     "symfony-app-dir": "app", 
     "symfony-web-dir": "web", 
     "symfony-assets-install": "relative", 
     "incenteev-parameters": { 
      "file": "app/config/parameters.yml" 
     }, 
     "branch-alias": { 
      "dev-master": "2.7-dev" 
     } 
    } 
} 

e ho ottenuto una versione di PHP 5.5.9 e Ubuntu 14.04 come sistema operativo.

Qualcuno può spiegarmi perché sto ricevendo questi errori e come risolverli?

Answer 1

Secondo i vostri errori, il problema è che non avete l'estensione PHP cURL installata.

In Ubuntu, provare le seguenti per installare i pacchetti

sudo apt-get install curl php5-curl

Ora provate di nuovo.