编写wyrihaximus/aratt(CakePHP插件)时出错

Question

我正在尝试为CakePHP安装WyriHaximus的Ratchet插件以使用WebSockets。我在Cakes composer.json中添加了以下行：

 "require": {
        "php": ">=5.2.8",
        "ext-mcrypt": "*",
        "react/socket": "0.3.*|0.4.*",
        "wyrihaximus/ratchet": "dev-master"
    },
    "config": {
        "vendor-dir": "/app/Vendor/"
    },

当我在CLI中运行"composer update"时，它会抛出以下错误，尽管我运行的是PHP 5.5:

Problem 1
  - Installation request for wyrihaximus/ratchet dev-master -> satisfiable by wyrihaximus/ratchet[dev-master].
  - wyrihaximus/ratchet dev-master requires php >=5.4.0 -> no matching package found.

原因是什么？如何解决？

Answer 1

查看该输出，您没有PHP5.4或更高版本。您可以使用php -v进行检查。