获取路径
1.app_path函数返回app目录的绝对路径1
'app_path' => string '/home/vagrant/code/Laravel/app'
2.base_path函数返回项目根目录的绝对路径1
'base_path' => string '/home/vagrant/code/Laravel'
3.config_path函数返回应用配置目录的绝对路径1
'config_path' => string '/home/vagrant/code/Laravel/config'
4.database_path函数返回应用数据库目录的绝对路径1
'database_path' => string '/home/vagrant/code/Laravel/database'
5.public_path函数返回public目录的绝对路径1
'public_path' => string '/home/vagrant/code/Laravel/public'
6.storage_path函数返回storage目录的绝对路径1
'storage_path' => string '/home/vagrant/code/Laravel/storage'