symfony serve 修改端口

看了一下官方文档，没找到怎么改，于是尝试了一下理所当然的参数：

symfony serve --port=9000

竟然work了。完美。

查看了一下命令行支持的参数，果然有 --port：

$ symfony serve -h
Description:
  Run a local web server

Usage:
  symfony local:server:start [options]

Options:
  --dir=value            Project directory
  --allow-http           Prevent auto-redirection from HTTP to HTTPS
  --document-root=value  Project document root (auto-configured by default)
  --passthru=value       Project passthru index (auto-configured by default)
  --port=value           Preferred HTTP port [default: 8000]
  --daemon, -d           Run the server in the background
  --no-humanize          Do not format JSON logs
  --p12=value            Certificate path (p12 format)
  --no-tls               Use HTTP instead of HTTPS