我是ubuntu新手。我已经安装了phpstorm并尝试运行composer，但它'；他不跑了

我已经在ubuntu 14.04中安装了phpstorm 尝试使用命令php artisan migrate访问数据库时出错：

 wwwsabininfonp@wwwsabininfonp-Aspire-E1-471:/opt/lampp/htdocs/fine-arts$ php artisan migrate                                                                                                             
  [PDOException]                                                                                               
  SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)  

当我尝试使用命令生成器更新时，出现以下错误：

    Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - gregwar/captcha dev-master requires ext-gd * -> the requested PHP extension gd is missing from your system.
    - gregwar/captcha dev-master requires ext-gd * -> the requested PHP extension gd is missing from your system.
    - Installation request for gregwar/captcha dev-master -> satisfiable by gregwar/captcha[dev-master].

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我不知道为什么这段代码在责骂我….

错误说明您需要PHP的“gd”扩展。您应该能够按如下方式安装它：

sudo apt-get install php5-gd

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它适用于composer更新，但仍然存在迁移的连接问题。。。谢谢你确定你已经正确安装和配置了MySQL服务器吗？mysql服务器正在运行吗？（您可以通过

sudo服务mysql status

）看到它正在运行。。mysql启动/运行，进程1050